2024-03-29T15:01:29Zhttps://vtechworks.lib.vt.edu/server/oai/requestoai:vtechworks.lib.vt.edu:10919/935652023-11-29T12:14:23Zcom_10919_23967com_10919_5557col_10919_23968
Simulation of Individual Tree Growth and Stand Development in Loblolly Pine Plantations on Cutover, Site-Prepared Areas
Burkhart, Harold E.
Farrar, Kenneth D.
Amateis, Ralph L.
Daniels, Richard F.
Forest Resources and Environmental Conservation
A forest stand simulator, PTAEDA2, was developed to model growth in loblolly pine (Pinus taeda L.) plantations on cutover, site-prepared areas. Individual trees were used as the basic growth units. In PTAEDA2, trees are assigned coordinate locations in a stand and 'grown' annually as a function of their size, the site quality, and the competition from neighbors. Growth increments are adjusted by stochastic elements representing genetic and microsite variability. Mortality is generated stochastically through Bernouli trials, Subroutines were developed to simulate the effects of hardwood competition, thinning, and fertilization on tree and stand development. Options for varying the spatial location of trees to mimic randomness in machine and hand planting operations are also included.
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
1987
Report
http://hdl.handle.net/10919/93565
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-87.pdf
en
FWS-1-87
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/810812023-11-29T12:14:24Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2013
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2013
Periodical
http://hdl.handle.net/10919/81081
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935592023-11-29T12:14:25Zcom_10919_23967com_10919_5557col_10919_23968
Diameter Distributions and Yields of Natural Stands of Loblolly Pine
Burk, Thomas E.
Burkhart, Harold E.
Forest Resources and Environmental Conservation
A diameter distribution yield model was developed based upon measurements of 117 0.1-acre temporary plots located in naturally regenerated loblolly pine stands in the Piedmont and Coastal Plain of Virginia and the Coastal Plain of North Carolina. Diameter distributions were derived using the Weibull density function by requiring that the distribution's arithmetic and quadratic means matched those predicted from stand-level attributes using regression equations. Software was written in FORTRAN and BASIC implementing the model and an existing basal area projection equation. Stand and stock tables are presented for 30-year projections from age 20 for various combinations of site index and initial basal area.
2019-09-11T19:58:50Z
2019-09-11T19:58:50Z
2019-09-11T19:58:50Z
1984
Report
http://hdl.handle.net/10919/93559
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-84.pdf
en
FWS-1-84
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/881232023-11-29T12:14:26Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Summer 2004
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2004
Periodical
http://hdl.handle.net/10919/88123
2
3
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Summer2004.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881292023-11-29T12:14:27Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Summer 2006
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:51Z
2019-03-06T18:33:51Z
2019-03-06T18:33:51Z
2006
Periodical
http://hdl.handle.net/10919/88129
4
3
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Summer2006.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/998452023-11-29T12:14:28Zcom_10919_23967com_10919_5557col_10919_23968
Virginia Tech’s RootReport 2020
Kruger, Steve D.
Munsell, John F.
RootReport is a project of the Department of Forest Resources and Environmental Conservation at Virginia Tech. We study the medicinal plant trade as part of our mission to provide research and extension services for non-timber forest products. From 2013-2016 we sent out a confidential, voluntary questionnaire to ginseng dealers about the other products they may have purchased. Our goal was to be able to estimate the annual output of some of the more commonly traded medicinal forest products and better understand their value and where they come from. As we prepare for our next survey to begin in this summer, we wanted to thank the buyers who participated, and share our results from the previous round.
2020-08-25T18:36:23Z
2020-08-25T18:36:23Z
2020-08-25T18:36:23Z
2020
Report
http://hdl.handle.net/10919/99845
https://www.rootreport.frec.vt.edu/docs/RootReport2020.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/881242023-11-29T12:14:29Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Winter 2004
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2004
Periodical
http://hdl.handle.net/10919/88124
2
1
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Winter2004.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/59862023-11-29T12:14:30Zcom_10919_23967com_10919_5557col_10919_23968
Department of Forestry Annual Report 2005
College of Natural Resources
Department of Forestry
2011-07-20T14:37:14Z
2011-07-20T14:37:14Z
2011-07-20T14:37:14Z
2005
Annual report
2005_Annual_Report.pdf
http://hdl.handle.net/10919/5986
en_US
Copyright of university publications is largely held by Virginia Tech.
Blacksburg, VA
Department of Forestry
http://frec.vt.edu/2005%20Annual%20Report.pdf
oai:vtechworks.lib.vt.edu:10919/897732023-11-29T12:14:31Zcom_10919_23967com_10919_5557col_10919_23968
Department of Forest Resources and Environmental Conservation Annual Report 2018
Forest Resources and Environmental Conservation
This is the 2018 annual report for the Department of Forest Resources and Environmental Conservation.
2019-06-05T14:58:20Z
2019-06-05T14:58:20Z
2019-06-05T14:58:20Z
2018
Periodical
http://hdl.handle.net/10919/89773
https://frec.vt.edu/content/dam/frec_vt_edu/documents/2018FRECAnnualReport.pdf
en
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/239692023-11-29T12:14:32Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2013
Hollandsworth, Kathryn
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
The Department of Forest Resources and Environmental Conservation
2013-11-11T14:06:50Z
2013-11-11T14:06:50Z
2013-11-11T14:06:50Z
2013
Periodical
http://hdl.handle.net/10919/23969
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/810832023-11-29T12:14:33Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2016
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2016
Periodical
http://hdl.handle.net/10919/81083
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935692023-11-29T12:14:34Zcom_10919_23967com_10919_5557col_10919_23968
The Economics of Producing and Marketing Christmas Trees on Small Plantations in Virginia
Leuschner, William A.
Sellers, William A.
Forest Resources and Environmental Conservation
The purpose of this report is to assist potential and existing Christmas tree growers in making better informed decisions on investments in small Christmas tree plantations, We seek to accomplish this by presenting cost and revenue data and an analysis system to assess probable financial returns. Potential growers should find the entire report of interest although existing growers may want to concentrate their attention on the sections containing cost and revenue data and the discussion of financial analyses.
2019-09-11T19:58:53Z
2019-09-11T19:58:53Z
2019-09-11T19:58:53Z
1975
Report
http://hdl.handle.net/10919/93569
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-75.pdf
en
FWS-1-75
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/239762023-11-29T12:14:36Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2010
Hollandsworth, Kathryn
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T15:01:59Z
2013-11-11T15:01:59Z
2013-11-11T15:01:59Z
2010
Periodical
http://hdl.handle.net/10919/23976
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/239732023-11-29T12:14:38Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2011
Hollandsworth, Kathryn
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T14:48:53Z
2013-11-11T14:48:53Z
2013-11-11T14:48:53Z
2011
Periodical
http://hdl.handle.net/10919/23973
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/935492023-11-29T12:14:38Zcom_10919_23967com_10919_5557col_10919_23968
Costs of Establishing Loblolly Pine Plantations In Virginia: Methodology and Estimates
Thompson, Emmett F.
Shores, Michael E.
Sullivan, Alfred D.
Forest Resources and Environmental Conservation
Forest regeneration decisions are among the most important that foresters make. In many instances, the cost of regeneration may be the largest cost item incurred in producing a timber crop. Accordingly, information on the cost of establishing satisfactorily stocked stands is a necessary ingredient for effective forestry decision making. This report presents a method for obtaining such information and provides cost estimates for establishing loblolly pine (Pinus taeda L.) plantations in Virginia.
2019-09-11T19:58:46Z
2019-09-11T19:58:46Z
2019-09-11T19:58:46Z
1973-02
Report
http://hdl.handle.net/10919/93549
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-73.pdf
en
FWS-1-73
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/937782023-11-29T12:14:39Zcom_10919_23967com_10919_5557col_10919_23968
Preliminary Results of the 2013 Virginia Tech Root Report
Kruger, Steve D.
Munsell, John F.
Forest Resources and Environmental Conservation
The Department of Forest Resources and Environmental Conservation at Virginia Tech is working on a study of the medicinal plant trade as part of a larger effort to provide research and extension services for non-timber forest products. In 2014 we sent out a confidential, voluntary questionnaire to ginseng dealers on the other products they may have purchased in 2013. Our goal is to be able to estimate the annual output of some of the more commonly traded medicinal forest products and be able to see how production is distributed throughout the region.
2019-09-19T18:23:54Z
2019-09-19T18:23:54Z
2019-09-19T18:23:54Z
2014
Report
http://hdl.handle.net/10919/93778
https://www.rootreport.frec.vt.edu/docs/RootReport2013Resultsi.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/239702023-11-29T12:14:41Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2012
Hollandsworth, Kathryn
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T14:21:36Z
2013-11-11T14:21:36Z
2013-11-11T14:21:36Z
2012
Periodical
http://hdl.handle.net/10919/23970
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/810792023-11-29T12:14:42Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2014
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2014
Periodical
http://hdl.handle.net/10919/81079
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935402023-11-29T12:14:43Zcom_10919_23967com_10919_5557col_10919_23968
Aids for Unit Planning on the Appalachian National Forests
Burkhart, Harold E.
Leuschner, William A.
Stuck, R. Dean
Porter, John R.
Reynolds, Marion R. Jr.
Forest Resources and Environmental Conservation
This report summarizes the results of studies conducted in response to a cooperative agreement between the Southern Region, U.S. Forest Service and the Department of Forestry and Forest Products, Virginia Polytechnic Institute and State University. The objective of the agreement was to improve National Forest management planning techniques. The agreement covered the period July 1, 1973 to June 30, 1975. Literature citations are given for those who desire additional detail.
2019-09-11T19:58:43Z
2019-09-11T19:58:43Z
2019-09-11T19:58:43Z
1976
Report
http://hdl.handle.net/10919/93540
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-76.pdf
en
FWS-1-76
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935452023-11-29T12:14:44Zcom_10919_23967com_10919_5557col_10919_23968
The 1977 Virginia Outdoor Recreation Survey
Spittle, Gerald D.
Buhyoff, Gregory J.
Davy, John R. Jr.
McElwee, Robert L.
Forest Resources and Environmental Conservation
The Virginia Commission of Outdoor Recreation coordinated through the Planning District Commissions an inventory of statewide recreation resources between April, 1977 and September, 1977. The School of Forestry and Wildlife Resources, Virginia Polytechnic Institute and State University, transferred the data into a computerized retrieval system from which this summary booklet was derived.
This inventory is an integral part of the Virginia Outdoors Plan Information System. Its primary purpose is to provide information enabling the Commission to formulate and write the statewide comprehensive outdoor recreation plan. It is also envisaged that this data be used for other planning activities, such as those conducted by federal and state agencies or the 22 Planning District Commissions in Virginia, as well as for various research activities, special studies, and teaching.
The purpose of this publication is threefold. The first is to encourage further use of the data it contains by informing the public of the specific type of information available. The second is to present a comprehensive set of data which can be used to answer general inquiries about the nature and distribution of recreation resources in the Commonwealth of Virginia. Finally, it is to advise that this data is available in other forms which may better suit individual needs but which would be too numerous to publish in this bulletin.
2019-09-11T19:58:45Z
2019-09-11T19:58:45Z
2019-09-11T19:58:45Z
1978
Report
http://hdl.handle.net/10919/93545
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-5-78.pdf
en
FWS-5-78
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935662023-11-29T12:14:44Zcom_10919_23967com_10919_5557col_10919_23968
The Wildlife Management Planning Game: Administrative Manual
Sullivan, Alfred D.
Guynn, David C.
Forest Resources and Environmental Conservation
This manual has a twofold purpose: (1) to provide operating information for the game administrator, and (2) to provide documentation of the FORTRAN IV program which is the basis of the Wildlife Management Planning Game. It is assumed that the reader is already familiar with the manual entitled 11 Instructions to Participants." It provides the player with an introduction to computer simulation and describes the game itself.
The Wildlife Management Planning Game provides the participant with an opportunity to make decisions in an environment of complex relationships and uncertainties. Enthusiasm and motivation in the learning experience are enhanced when the player can view the future outcome of his policy decisions and revise them with the aid of his increased "experience." Players should be allowed opportunities for policy revision and reruns during the gaming session. This allows the player to fully interpret results and formulate policy variations in an effort to improve his plan. After each play of the game, group discussions should be encouraged so that the player can benefit from the experiences of fellow students.
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
1973-09
Report
http://hdl.handle.net/10919/93566
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-73.pdf
en
FWS-3-73
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/914582023-11-29T12:14:45Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
2018 Annual Report: Virginia Big Tree Program
Wiseman, P. Eric
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The Virginia Big Tree Program is a public outreach program coordinated by Virginia Cooperative Extension and the Department of Forest Resources and Environmental Conservation at Virginia Tech. The program maintains a register of the 3 largest specimens of over 300 native, non-native, and naturalized tree species. This annual report details program accomplishments in 2018, including Big Tree reports, national rankings, and student intern contributions.
2019-07-15T20:02:26Z
2019-07-15T20:02:26Z
2019-07-15T20:02:26Z
2018
Annual report
http://hdl.handle.net/10919/91458
http://bigtree.cnre.vt.edu/documents/BigTreeVAAnnualReport%20.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/823592023-11-29T12:14:47Zcom_10919_23967com_10919_5557col_10919_23968
FREC Annual Report 2016
Forest Resources and Environmental Conservation
This is a report of the activities and accomplishments of the Department of Forest Resources and Environmental Conservation in 2016.
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2016
Report
http://hdl.handle.net/10919/82359
https://frec.vt.edu/
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881112023-11-29T12:14:48Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Fall 2007
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2007
Periodical
http://hdl.handle.net/10919/88111
5
4
http://www.gep.frec.vt.edu/pdfFiles/VaGeoNewsletter-Fall2007.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935572023-11-29T12:14:49Zcom_10919_23967com_10919_5557col_10919_23968
Cultural, Management and Economic Research Needed To Assist the Non-Industrial Private Forest Landowner in the Southeastern U.S. - a Problem Analysis -
McElwee, Robert L.
Hall, Otis F.
Forest Resources and Environmental Conservation
Much attention has been directed in recent years to finding ways of increasing the productivity of private non-industrial forest land ownerships in the South. Justification for the interest directed towards this ownership lies in its collective size, physical accessibility, potential for intensive management and the annual erosion of land base and growing stock of southern forests.
Non-industrial private owners collectively are a most influential group, in position to shape the future posture of forestry and the quantity and quality of bbenefits to be obtained from forest lands. The manner in which these landowners husband their ownerships will determine progress made in arresting soil erosion, providing adequate supplies of potable water, maintaining a wildlife resource for consumptive and non-consumptive uses, continuing forest environments as a locale for recreational uses, and assuring a continuing supply of timber at reasonable costs for an expanding population.
There is little doubt concerning the need to encourage greater production from these lands. By its sheer size, the non-industrial private ownership is the key to achieving gains in forest production. This ownership controls more than 70 percent of the forest land in the South. These owners must provide the major means of meeting projected increased needs in the goods and services derived from forest lands. As later paragraphs show, anticipated future needs surpass present productivity for southern pine. The productive potential exists tor the South to meet anticipated future needs, but to do so the non-industrial private ownerships must increase the amount of forest land supporting southern pines and must husband more intensively the southern pine forest.
Non-industrial private landowners are a diverse group. They vary widely in their methods and reasons for acquiring forest properties, objectives of ownership, knowledge of forest management, financial capabilities and interests in enhancing the productive and financial values of their properties. Motivation is often lacking for them to enhance the value of their ownerships by increasing production.
To define research priorities to assist these owners, a cooperative effort was initiated by the Southeastern Forest Experiment Station of the U.S. Forest Service, the Virginia Division of Forestry and the School of Forestry and Wildlife Resources at Virginia Tech. Some funding was provided by the Station and a Problem Analysis Team organized. This team met three times during 1981, planned the approach taken, reviewed and made suggestions on the sequence of manuscript revisions, and participated in the ranking of research priorities. Suggestions, preliminary manuscript review, and research priority ranking were solicited from a Technical Review Panel (See Appendix A). The resulting analysis presented here is a synthesis of the viewpoints of individuals representing governmental agencies, associations, wood-using industry, private landowners and forestry educators throughout the southern pine region. The prime objective is to assure an adequate supply lo southern pine to meet projected needs, while assuring non-industrial private landowners that investments in forest production are financially sound.
2019-09-11T19:58:49Z
2019-09-11T19:58:49Z
2019-09-11T19:58:49Z
1982
Report
http://hdl.handle.net/10919/93557
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-5-82.pdf
en
FWS-5-82
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/937792023-11-29T12:14:51Zcom_10919_23967com_10919_5557col_10919_23968
RootReport: Preliminary Results for 2014
Kruger, Steve D.
Munsell, John F.
Forest Resources and Environmental Conservation
RootReport is an ongoing project of the Department of Forest Resources and Environmental Conservation at Virginia Tech. We do market assessment and create extension resources for nontimber forest products. For the last three years we have sent questionnaires to medicinal plant buyers about what products they purchase, how much is being produced and how harvests are distributed around the region. At this stage, we are focusing on medicinal plants in eastern deciduous forests. The data presented here were collected in 2015 and represent products purchased in 2014.
2019-09-19T18:26:39Z
2019-09-19T18:26:39Z
2019-09-19T18:26:39Z
2015
Report
http://hdl.handle.net/10919/93779
https://www.rootreport.frec.vt.edu/docs/RootReport2014Results.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/239792023-11-29T12:14:52Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2008
Sherman (Coordinator), Tracey
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T15:19:14Z
2013-11-11T15:19:14Z
2013-11-11T15:19:14Z
2008
Periodical
http://hdl.handle.net/10919/23979
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/935432023-11-29T12:14:53Zcom_10919_23967com_10919_5557col_10919_23968
The 1977 Virginia Outdoor Recreation Demand Survey
Roggenbuck, Joseph W.
Forest Resources and Environmental Conservation
Knowledge of the present and projected public demand for outdoor recreation is a key element in the planning of a comprehensive system of outdoor recreation opportunities throughout Virginia. Public preferences for outdoor recreation experiences have changed dramatically in recent years, and formal measures of demand at any point in time remain only approximate. Nevertheless, demand analyses that are based upon the premise of satisfying public needs--as the public defines them--have a solid basis in the traditions and policies of governmental service agencies, and do provide a general guide for the planning, acquisition and development of outdoor recreation lands and facilities.
This outdoor recreation demand booklet, published by the School of Forestry and Wildlife Resources, Virginia Polytechnic Institute and State University, in cooperation with the Virginia Commission of Outdoor Recreation, has three general purposes. The first is to provide federal, state and local agencies and organizations with responsibilities for the provision of outdoor recreation services with guidelines on current and projected demand for recreation activities by state, region, and locality. The second is to make the demand estimates easily available to agencies and organizations whose responsibilities do not include outdoor recreation but whose activities may impinge upon that system. Finally, the data contained here should be useful in various research activities, special studies, and teaching regarding the Virginia outdoor recreation system.
2019-09-11T19:58:44Z
2019-09-11T19:58:44Z
2019-09-11T19:58:44Z
1978
Report
http://hdl.handle.net/10919/93543
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-78b.pdf
en
FWS-3-78b
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/881202023-11-29T12:14:54Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Spring 2004
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2004
Periodical
http://hdl.handle.net/10919/88120
2
2
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Spring2004.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881252023-11-29T12:14:55Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Fall 2005
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2005
Periodical
http://hdl.handle.net/10919/88125
3
4
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Fall2005.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/239722023-11-29T12:14:56Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2011
Hollandsworth, Kathryn
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T14:37:41Z
2013-11-11T14:37:41Z
2013-11-11T14:37:41Z
2011
Periodical
http://hdl.handle.net/10919/23972
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/881132023-11-29T12:14:57Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Winter 2007
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2007
Periodical
http://hdl.handle.net/10919/88113
5
1
http://www.gep.frec.vt.edu/pdfFiles/VaGeoNewsletter-Winter2007.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/823582023-11-29T12:15:00Zcom_10919_23967com_10919_5557col_10919_23968
FREC Highlights of 2014
Forest Resources and Environmental Conservation
This report highlights accomplishments in learning, discovery, and engagement in the Department of Forest Resources and Environmental Conservation (FREC) during 2014.
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2014
Report
http://hdl.handle.net/10919/82358
https://frec.vt.edu/
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881272023-11-29T12:15:01Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Fall 2006
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2006
Periodical
http://hdl.handle.net/10919/88127
4
4
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Fall2006.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881122023-11-29T12:15:02Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Summer 2007
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2007
Periodical
http://hdl.handle.net/10919/88112
5
3
http://www.gep.frec.vt.edu/pdfFiles/VaGeoNewsletter-Summer2007.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881152023-11-29T12:15:03Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Spring 2008
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2008
Periodical
http://hdl.handle.net/10919/88115
6
2
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Spring2008.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881162023-11-29T12:15:04Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Summer 2008
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2008
Periodical
http://hdl.handle.net/10919/88116
6
3
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Summer2008.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881282023-11-29T12:15:05Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Spring 2006
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2006
Periodical
http://hdl.handle.net/10919/88128
4
2
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Spring2006.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/810862023-11-29T12:15:06Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2015
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:22:00Z
2017-12-07T18:22:00Z
2017-12-07T18:22:00Z
2015
Periodical
http://hdl.handle.net/10919/81086
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935472023-11-29T12:15:07Zcom_10919_23967com_10919_5557col_10919_23968
A Qualitative Analysis of The Southern Pine Beetle's Wildlife Impact
Maine, John D.
Leuschner, William A.
Tipton, Alan R.
Forest Resources and Environmental Conservation
Wildlife's social value has long been known. Early attempts to place dollar values on wildlife were crude (Stains and Barkalow, 1951; Collins, 1959) and often incomprehensible. For example, Collins found that each deer killed by bow hunters was worth $5,280 based on hunter expenditures. However, these early researchers were aware that it is important to consider wildlife's social value in forest management decisions. These include pest management dee is ions generally and Southern Pine Beetle ( Dendroctonus frontal is Zimm) (SPB) management decisions specifically.
Wildlife has three basic values in the Southeast: recreational, aesthetic, and scientific. The recreational value is realized by the more than 30 million people who spend billions of dollars each year pursuing fish and game species. These people partially support the sporting arms and ammunition, camping equipment, campground, and restaurant industries.
2019-09-11T19:58:45Z
2019-09-11T19:58:45Z
2019-09-11T19:58:45Z
1980
Report
http://hdl.handle.net/10919/93547
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-80.pdf
en
FWS-1-80
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935712023-11-29T12:15:08Zcom_10919_23967com_10919_5557col_10919_23968
Computer-Implemented Simulation as a Planning Aid for State Fisheries Management Agencies
Clark, Richard D., Jr.
Lackey, Robert T.
Forest Resources and Environmental Conservation
A basic job of fisheries management agencies is to forecast the demand and produce the necessary supply of fishing opportunities. Present day angling consumption rates often exceed managers' ability to supply fishing opportunities of the desired quality. Therefore, a primary means for improving fisheries management may be to regulate angling consumption. Operations research techniques are well suited for handling the complexities involved with planning multiple action policies for regulating angler consumption.
PISCES is a computer-implemented simulator of the inland fisheries management system of Tennessee, but is adaptable for use in any state. The purpose of PISCES is to aid in planning fisheries management decision policies at the macro-level. PISCES generates predictions of how fisheries management agency activities will affect angler use for a fiscal year. Subjective probability distributions for random variables and Monte Carlo simulation techniques are employed to produce an expected value and standard deviation for each prediction. Test runs under realistic hypothetical situations and discussions with personnel of Tennessee Wildlife Resources Agency suggest that PISCES may help fisheries management agencies to improve budget allocation decisions, to formulate multiple action policies for regulating angler use, and to enhance fisheries development. A hypothetical application of PISCES in Tennessee is given.
2019-09-11T19:58:54Z
2019-09-11T19:58:54Z
2019-09-11T19:58:54Z
1975
Report
http://hdl.handle.net/10919/93571
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-75.pdf
en
FWS-3-75
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/239782023-11-29T12:15:09Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2009
Sherman (Coordinator), Tracey
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T15:15:51Z
2013-11-11T15:15:51Z
2013-11-11T15:15:51Z
2009
Periodical
http://hdl.handle.net/10919/23978
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/1087832023-11-29T12:15:10Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2021
The spring 2021 issue of issue of Forestry, the newsletter for the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2022-02-21T15:25:19Z
2022-02-21T15:25:19Z
2022-02-21T15:25:19Z
2021
Periodical
http://hdl.handle.net/10919/108783
https://frec.vt.edu/content/dam/frec_vt_edu/documents/frec_spring2021.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881142023-11-29T12:15:11Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Fall 2008
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2008
Periodical
http://hdl.handle.net/10919/88114
6
4
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Fall2008.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935672023-11-29T12:15:12Zcom_10919_23967com_10919_5557col_10919_23968
Economic Guidelines for Loblolly Pine Management in Virginia
Thompson, Emmett F.
Mantie, Robert C.
Sullivan, Alfred D.
Burkhart, Harold E.
Forest Resources and Environmental Conservation
Recent studies (e.g. Southern Forest Resource Analysis Committee, 1969; U. S. Forest Service, 1972) indicate that wood requirements may exceed available supplies by the end of this century. The latest forest survey of Virginia (Knight and McClure, 1967) indicated a 15 percent excess of pine cut over pine growth As a result of this latter finding, Virginia's General Assembly passed a 1970 Reforestation of Timberlands Act. This Act provides financial assistance to private landowners to restore former pine growing lands to pine production.
Virginia has clearly established a state policy of encouraging investment in forest production. However, individual landowners may have alternative uses for their land and/or capital, or they may not be fully aware of their land's potential for timber. The specific objective of this study was to develop a means for making economic data on using their land for loblolly pine production available to Virginia's individual forest landowners. The study was limited to loblolly pine for several reasons. Loblolly pine is perhaps the most important of the. timber species currently grown in Virginia, and it is expected to increase in importance.Of the 67.5 million tree seedlings planted in Virginia in 1972, 62.0 million were loblolly pine and 36.5 million of these were planted by farmers and other individuals (Virginia Forests, 1972). Loblolly pine accounts for over 90 per cent of the approximately 85 thousand acres artificially regenerated in Virginia each year (Shores, 1970). In addition, new information on the physical yields of natural stands of loblolly pine and loblolly pine plantations in Virginia has recently become available (Burkhart, et al., 1972a; Burkhart, et al., 1972b).
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
1973-12
Report
http://hdl.handle.net/10919/93567
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-4-73.pdf
en
FWS-4-73
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/881212023-11-29T12:15:13Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Winter 2009
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2009
Periodical
http://hdl.handle.net/10919/88121
7
1
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Winter2009.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935412023-11-29T12:15:14Zcom_10919_23967com_10919_5557col_10919_23968
A General Population Dynamics Theory for Largemouth Bass
Jester, Douglas B. Jr.
Garling, Donald L. Jr.
Tipton, Alan R.
Lackey, Robert T.
Forest Resources and Environmental Conservation
In this report, we develop a general theory of the relationship between life history and population structure for largemouth bass. In its most usable form the model is represented by a stochastic integral equation that is analogous to the classical Lotka model for age structure of populations. The corresponding differential equations can also be used successfully when closed-form solutions are available or when the phenotype dimension is low enough to permit numerical solution.
Three general conclusions are presented. First, population dynamics may be appropriately viewed as a consequence of life history phenomena. This view suggests that, at least where prediction of population structure or where explanation of the phenomena is desired, such phenomena as density-dependence may be most appropriately described by analyzing effects of population structure and density on life history in the population. The second conclusion is that variation in life history may be important in determining population structure. Terms describing effects of variation are explicitly included in the model equations. The magnitude of these terms, however, is completely unknown for any life histories with which we are familiar. The third conclusion to be drawn is that population structure, at least averaged over time, should be fairly stable in large populations. Effects of variation in small populations, on the other hand, have not been analyzed and might be important.
2019-09-11T19:58:43Z
2019-09-11T19:58:43Z
2019-09-11T19:58:43Z
1977
Report
http://hdl.handle.net/10919/93541
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-77.pdf
en
FWS-1-77
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/810872023-11-29T12:15:16Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Summer 2017
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:22:00Z
2017-12-07T18:22:00Z
2017-12-07T18:22:00Z
2017
Periodical
http://hdl.handle.net/10919/81087
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/823412023-11-29T12:15:17Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Winter 2017-2018
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2018-02-23T16:41:56Z
2018-02-23T16:41:56Z
2018-02-23T16:41:56Z
2018
Periodical
http://hdl.handle.net/10919/82341
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/845542023-11-29T12:15:19Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Summer 2018
Department of Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2018-08-15T13:03:27Z
2018-08-15T13:03:27Z
2018-08-15T13:03:27Z
2018-08
Periodical
http://hdl.handle.net/10919/84554
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935562023-11-29T12:15:19Zcom_10919_23967com_10919_5557col_10919_23968
WEIBUL: A Program to Estimate Parameters of Forms of the Weibull Distribution Using Complete, Censored, and Truncated Data
Zutter, Bruce
Oderwald, Richard G.
Farrar, Robert M., Jr.
Murphy, Paul A.
Forest Resources and Environmental Conservation
The Weibull distribution has been used in many areas of forestry research. Complete Weibull distributions have been used to describe individual tree mortality (Glover and Hool 1979), stand level mortality (Somers et al. 1980), seed germination (Bonner and Dell 1976, Rink et tl, 1979), and tree height and diameter distribution in forest stands (Bailey and Dell 1973, Hafley and Schreuder 1977, and others). Computer programs to estimate parameters of the complete Weibull distribution when the data are complete are readily available (Bailey 1974, Schreuder et al. 1978). Sample data for some applications may be censored or truncated rather than complete.
The program WEIBUL was prepared to allow estimation of complete or truncated Weibull distribution parameters from several types of censored or truncated data.
2019-09-11T19:58:48Z
2019-09-11T19:58:48Z
2019-09-11T19:58:48Z
1982
Report
http://hdl.handle.net/10919/93556
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-82.pdf
en
FWS-3-82
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/881192023-11-29T12:15:20Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Summer 2009
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2009
Periodical
http://hdl.handle.net/10919/88119
7
3
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Summer2009.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/59852023-11-29T12:15:22Zcom_10919_23967com_10919_5557col_10919_23968
Department of Forestry Annual Report 2006
College of Natural Resources
Department of Forestry
2011-07-20T14:37:13Z
2011-07-20T14:37:13Z
2011-07-20T14:37:13Z
2007-08-10
Annual report
2006AnnualReport.pdf
http://hdl.handle.net/10919/5985
en_US
Copyright of university publications is largely held by Virginia Tech.
Blacksburg, VA
Department of Forestry
http://frec.vt.edu/2006AnnualReport.pdf
oai:vtechworks.lib.vt.edu:10919/935512023-11-29T12:15:22Zcom_10919_23967com_10919_5557col_10919_23968
A Comparison of Growth and Yield Prediction Models for Loblolly Pine
Burkhart, Harold E.
Cao, Quang V.
Ware, Kenneth D.
Forest Resources and Environmental Conservation
The objective of the study reported here was to analyze published growth and yield systems for loblolly pine, characterizing the nature of the data on which the study was based, specifying what input information is needed, and stating what output estimates and predictions are obtainable. Predicted values from various studies are also compared vis-a-vis those from other investigations, and, where possible, conclusions and recommendations are drawn.
2019-09-11T19:58:47Z
2019-09-11T19:58:47Z
2019-09-11T19:58:47Z
1981
Report
http://hdl.handle.net/10919/93551
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-2-81.pdf
en
FWS-2-81
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935482023-11-29T12:15:23Zcom_10919_23967com_10919_5557col_10919_23968
Main Stem Green and Dry Weights of Red Oak, White Oak, and Maple In the Appalachian Region of Virginia
Oderwald, Richard G.
Yaussy, Daniel A.
Forest Resources and Environmental Conservation
New emphasis has been placed on the weight of whole trees and portions of trees. Weight inventories and purchase of wood by weight are becoming increasingly common for saw logs as well as pulpwood. More information needs to be gathered on the weight of portions of tree stems, however, before weight can be a standard measurement unit. This information must also be flexible enough to be used with varying utilization standards so that new inventories will not be required when a standard changes.
The objective of this study was to develop main stem green and dry weights with and without bark to various top diameters inside and outside bark for red oak, white oak, and maple in the Appalachian region of Virginia.
2019-09-11T19:58:46Z
2019-09-11T19:58:46Z
2019-09-11T19:58:46Z
1980
Report
http://hdl.handle.net/10919/93548
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-80.pdf
en
FWS-3-80
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/881262023-11-29T12:15:24Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Spring 2005
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2019-03-06T18:33:50Z
2005
Periodical
http://hdl.handle.net/10919/88126
3
2
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Spring2005.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/823542023-11-29T12:15:26Zcom_10919_23967com_10919_5557col_10919_23968
FREC Strategic Plan, 2014-2020
Forest Resources and Environmental Conservation
Direction and plan for the department from 2014-2020.
2018-02-26T13:28:23Z
2018-02-26T13:28:23Z
2018-02-26T13:28:23Z
2014
Report
http://hdl.handle.net/10919/82354
https://frec.vt.edu/
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/810822023-11-29T12:15:27Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2015
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2015
Periodical
http://hdl.handle.net/10919/81082
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935552023-11-29T12:15:28Zcom_10919_23967com_10919_5557col_10919_23968
A Computer Program Package For Use With the Southern Pine Seed Orchard Inventory-Monitoring System
Merkle, Scott A.
Feret, Peter P.
Bramlett, David L.
Queijo, Donald L.
Forest Resources and Environmental Conservation
Southern pine seed orchards covering more than 10,000 acres currently produce over 160,000 pounds of improved seed having a potential of 1 billion seedlings annually. By the year 2000, annual seed production · is expected to reach 500,000 pounds. Seed orchards not only represent potential for improved growth, wood quality and pest resistance, but they also represent a large capital investment in orchard establishment and equipment and the ~ignificant annual costs of orchard maintenance, protection and harvesting. Since the immediate goal of the seed orchard investment is the annual production of cones and seed, the task of the seed orchard manager could be greatly lightened by a system that will forecast annual cone and seed crops and monitor production efficiency. Such a system has been developed by Bramlett and Godbee (1982). In the Inventory- Moni taring System (IMS) a set of sample trees are chosen from the seed orchard population. Then, based on the survival of cones on tagged sample branches in each sample tree, the expected number of cones and seed from the orchard can be predicted as early as 18 months prior to cone harvest. Bramlett and Godbee (1982) detailed various procedures for the selection of sample trees as well as methods for choosing sample branches and conducting flower, cone let and cone counts. Besides providing guidelines for data collection in the orchard, the authors also defined the variables used in the calculation of predicted cone and seed yields, including cone efficiency, seed potential, seed efficiency, extraction efficiency and germination efficiency. They showed how to compute (or update) the values of these variables and how to apply them in models to calculate predicted bushels of cones, predicted pounds of seed, predicted number of seedlings and other predicted values for the orchard. In addition to these predicted values, Bramlett and Godbee (1982) also demonstrated how the IMS can be used by the orchard manager to evaluate orchard productivity, identify the factors reducing yields, and formulate corrective action, including fertilization and pest management.
Because a great deal of record-keeping and repetitive mathematical operations are involved in the IMS, it is ideally suited to computerization. A computerized version of the IMS not only has the advantage of efficient data storage and manipulation, but it also makes possible the application of more sophisticated mathematical models as they become available, and facilitates the utilization of productivity data accumulated from year to year to improve the accuracy
of the system.
2019-09-11T19:58:48Z
2019-09-11T19:58:48Z
2019-09-11T19:58:48Z
1982
Report
http://hdl.handle.net/10919/93555
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-2-82.pdf
en
FWS-2-82
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/1018782023-11-29T12:15:32Zcom_10919_23967com_10919_5557col_10919_23968
2019 FREC Annual Report
This is the 2019 annual report for the Department of Forest Resources and Environmental Conservation.
2021-01-13T18:42:32Z
2021-01-13T18:42:32Z
2021-01-13T18:42:32Z
2019
Report
http://hdl.handle.net/10919/101878
https://frec.vt.edu/content/dam/frec_vt_edu/documents/2020_annual_report.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/823572023-11-29T12:15:33Zcom_10919_23967com_10919_5557col_10919_23968
FREC Highlights of 2013
Forest Resources and Environmental Conservation
This report highlights accomplishments in learning, discovery, and engagement in the Department of Forest Resources and Environmental Conservation (FREC) during 2013.
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2013
Report
http://hdl.handle.net/10919/82357
https://frec.vt.edu/
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/998442023-11-29T12:15:34Zcom_10919_23967com_10919_5557col_10919_23968
RootReport: Spotlight on Ginseng
Kruger, Steve D.
Munsell, John F.
This report provides a breakdown of data on annual ginseng harvests in the US.
2020-08-25T18:31:48Z
2020-08-25T18:31:48Z
2020-08-25T18:31:48Z
2020
Report
http://hdl.handle.net/10919/99844
https://www.rootreport.frec.vt.edu/docs/ginseng2020.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/935382023-11-29T12:15:35Zcom_10919_23967com_10919_5557col_10919_23968
Yields of Old-Field Loblolly Pine Plantations
Burkhart, Harold E.
Parker, Robert C.
Strub, Mike R.
Oderwald, Richard G.
Forest Resources and Environmental Conservation
Loblolly pine (Pinus taeda L.) is one of the most important commercial species to the forest industries in the South, with a range extending through the Piedmont and the Atlantic and Gulf Coastal Plains from Maryland to eastern Texas. Although there is a great deal of published information on the growth and yield of loblolly pine, much of the data for these studies has been collected in the southeastern part of the natural loblolly pine range and published results have generally involved only volume units such as board feet, cubic feet, or cords. Consequently, a cooperative yield study between the Division of Forestry and Wildlife Resources at Virginia Polytechnic Institute and State University and several industrial forestry organizations was initiated to gather yield information which would be primarily applicable to the Virginia area. The scope of this study included per-tree and peracre data for the various volume units as well as for green and dry weight. This paper presents per-acre yield information in volume and weight units for old-field loblolly pine plantations.
2019-09-11T19:58:41Z
2019-09-11T19:58:41Z
2019-09-11T19:58:41Z
1972-12
Report
http://hdl.handle.net/10919/93538
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-72.pdf
en
FWS-3-72
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/59872023-11-29T12:15:36Zcom_10919_23967com_10919_5557col_10919_23968
Department of Forestry Annual Report 2003
College of Natural Resources
Department of Forestry
2011-07-20T14:37:14Z
2011-07-20T14:37:14Z
2011-07-20T14:37:14Z
2003
Annual report
2003_Annual_Report_for_Website.pdf
http://hdl.handle.net/10919/5987
en_US
Copyright of university publications is largely held by Virginia Tech.
Blacksburg, VA
Department of Forestry
http://cnre.vt.edu/.../annualreport2003/2003%20Annual%20Report%20for%20Website.pdf
oai:vtechworks.lib.vt.edu:10919/935612023-11-29T12:15:37Zcom_10919_23967com_10919_5557col_10919_23968
Yields and Size Class Distributions for Unthinned Loblolly Pine Plantations on Cutover Site-Prepared Lands
Amateis, Ralph L.
Burkhart, Harold E.
Knoebel, Bruce R.
Sprinz, Peter T.
Forest Resources and Environmental Conservation
Data from plots established in unthinned loblolly pine plantations on cutover site-prepared lands were used to develop size class distribution and yield predictions. The data come from plantations of loblolly pine established over much of its natural range and represent a wide variety of stand conditions and site-preparation treatments. A three parameter Weibull density function was used to model diameter distributions, and a computer program, COYIELD, was developed to predict yields from stand attributes. The predicted yields should satisfactorily represent many sites in the Piedmont and Coastal Plain regions of the Southern United States.
2019-09-11T19:58:50Z
2019-09-11T19:58:50Z
2019-09-11T19:58:50Z
1984
Report
http://hdl.handle.net/10919/93561
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-2-84.pdf
en
FWS-2-84
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935502023-11-29T12:15:37Zcom_10919_23967com_10919_5557col_10919_23968
Evaluation of Ranked Set Sampling for Estimating Shrub Phytomass in Appalachian Oak Forests
Martin, Wayne L.
Sharik, Terry L.
Oderwald, Richard G.
Smith, David William
Forest Resources and Environmental Conservation
Ranked set sampling was introduced by McIntyre (1952) in estimating pasture yields. As described by McIntyre, the ranked set sampling procedure is implemented by first selecting a set of n elements at random from a population, and then raking those elements from lowest to highest by inspection of the variable of interest. The lowest ranked element is then measured. A second set of n elements is selected and ranked, and the second lowest element is measured. This process is continued until n such sets have been selected and n elements have been measured. The entire procedure can be repeated as many times as deemed necessary.
McIntyre claimed that the ranked set estimator of the population mean was unbiased regardless of errors in ranking, and that with perfect ranking the variance of the mean from ranked set sampling would be less than that of random sampling when the number of measured elements is the same for both methods. Halls and Dell (1966) concluded that ranked set sampling was more efficient than simple random sampling in estimating pasture yields. A theoretical underpinning for ranked set sampling was provided by Dell and Clutter (1972), who also demonstrated that ranked set sampling is more efficient than random sampling even when errors in ranking are present.
Ranked set sampling is clearly advantageous when measurement of an element is time consuming or costly and sample elements can be reliably ranked. The effectiveness of this technique has already been demonstrated for estimating forage and pasture yields. The objective of this study is to evaluate the effectiveness of ranked set sampling for estimating shrub phytomass in forest stands.
2019-09-11T19:58:46Z
2019-09-11T19:58:46Z
2019-09-11T19:58:46Z
1980
Report
http://hdl.handle.net/10919/93550
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-4-80.pdf
en
FWS-4-80
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935522023-11-29T12:15:38Zcom_10919_23967com_10919_5557col_10919_23968
Equations for Estimating Above-Ground Phytomass in the Understory of Appalachian Oak Forests
Martin, Wayne L.
Sharik, Terry L.
Oderwald, Richard G.
Smith, David William
Forest Resources and Environmental Conservation
Regression equations were developed for estimating total aboveground phytomass for 17 tree and shrub species in the understory of second growth Appalachian oak forest stands in southwest Virginia. All possible combinations of three functional forms of the equation and three independent variables, singly and in combination, were tested. The linear model, with stem basal area as the independent variable, provided the best fit to the data for 15 of the 17 species. The exceptions were the blueberries (vaccinium stamineum and v. vacillans), where crown area performed better than basal area as the independent variable.
2019-09-11T19:58:47Z
2019-09-11T19:58:47Z
2019-09-11T19:58:47Z
1981
Report
http://hdl.handle.net/10919/93552
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-81.pdf
en
FWS-3-81
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/239752023-11-29T12:15:40Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2010
Hollandsworth, Kathryn
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T14:56:58Z
2013-11-11T14:56:58Z
2013-11-11T14:56:58Z
2010
Periodical
http://hdl.handle.net/10919/23975
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/935442023-11-29T12:15:41Zcom_10919_23967com_10919_5557col_10919_23968
The 1977 Virginia Outdoor Recreation Needs Assessment
Roggenbuck, Joseph W.
Forest Resources and Environmental Conservation
This outdoor recreation needs assessment booklet, published by the School of Forestry and Wildlife Resources, Virginia Polytechnic Institute and State University, in cooperation with the Virginia Commission of Outdoor Recreation, has three general purposes. Its primary purpose is to provide guidelines on the amount and location of current and projected needs for additional outdoor recreational opportunities to federal, state, and local agencies and organizations with responsibilities for the provision of outdoor recreation services. The second is to make the needs estimates easily available to agencies and organizations whose responsibilities do not include outdoor recreation, but whose activities may impinge upon that system. Finally, the data contained here should be useful in various research activities, special studies, and teaching regarding the Virginia outdoor recreation system.
Need for outdoor recreation land and facilities, as defined in this booklet, represents the difference between demand for and supply of outdoor recreation opportunities. As such, a needs assessment requires the previous calculation of present and projected recreation demand and a thorough inventory of existing recreation supply. These analyses were accomplished in 1977 and have been published as the 1977 Virginia Outdoor Recreation Demand Survey and the 1977 Virginia Outdoor Recreation Inventory. Copies of these booklets are available from the Virginia Commission of Outdoor Recreation.
Since the needs estimates are dependent upon the ever-changing demand for and supply of outdoor recreation lands and facilities, the figures contained in this booklet are only approximate. The estimates should be viewed as providing general guidelines for decision-making, and not as precise measures of current deficiencies in the state's outdoor recreation system.
2019-09-11T19:58:44Z
2019-09-11T19:58:44Z
2019-09-11T19:58:44Z
1978
Report
http://hdl.handle.net/10919/93544
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-4-78.pdf
en
FWS-4-78
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935602023-11-29T12:15:41Zcom_10919_23967com_10919_5557col_10919_23968
The Wildlife Management Planning Game: Instructions to Participants
Guynn, David C.
Sullivan, Alfred D.
Forest Resources and Environmental Conservation
During the spring of 1971, a project was undertaken with the objective of constructing a unique simulation game that would be helpful in improving wildlife management planning. The game would be used primarily for inservice training of state game agency personnel and as a teaching aid in university courses. In addition, it could be used to familiarize those not acquainted with wildlife management planning with the significant decision variables of the system. Through the game, these people could become better acquainted with wildlife management planning and be able to understand and appreciate some of the unique problems involved.
The Wildlife Management Planning Game involves the planning processes of the wildlife management agency of an eastern state. The participant is placed in the position of a planner for a mountainous region. His primary responsibilities are scheduling management activities and setting hunting regulations. A five-year operating plan is formulated and then implemented on an annual basis. Each year, reports are issued that reflect public reaction to the planner's policies and provide information about man-days of hunting, population levels, estimates of legal and illegal harvests, and budget constraints for the following year. The planner is allowed to modify the operating plan after examination of the annual report if he feels changes are necessary or desirable. This process provides "on-the-job” learning experience by allowing the participant to see the results of his decisions at different points in time and, hopefully, of profiting from his mistakes.
2019-09-11T19:58:50Z
2019-09-11T19:58:50Z
2019-09-11T19:58:50Z
1973-09
Report
http://hdl.handle.net/10919/93560
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-2-73.pdf
en
FWS-2-73
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935392023-11-29T12:15:42Zcom_10919_23967com_10919_5557col_10919_23968
Simulation of Individual Tree Growth and Stand Development in Managed Loblolly Pine Plantations
Daniels, Richard F.
Burkhart, Harold E.
Forest Resources and Environmental Conservation
A FORTRAN based simulator, PTAEDA, was developed to model growth in managed loblolly pine (Pin us taeda L.) plantations, using individual trees as the basic growth units. In PTAEDA, trees are assigned coordinate locations in a stand and "grown" annually as a function of their size, the site quality, and the competition from neighbors. Growth increments are adjusted by stochastic elements representing genetic and microsite variability. Mortality is generated stochastically through Bernouli trials. Subroutines were developed to simulate the effects of site preparation, thinning, and fertilization on tree and stand development. Comparisons with published yields showed close agreement for thinned and unthinned old-field plantations. Results indicated that, compared to stand-level models used in the past, the simulator is more flexible in terms of growth and yield estimation and evaluation of alternatives under a wide range of management regimes.
2019-09-11T19:58:42Z
2019-09-11T19:58:42Z
2019-09-11T19:58:42Z
1975
Report
http://hdl.handle.net/10919/93539
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-5-75.pdf
en
FWS-5-75
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935582023-11-29T12:15:43Zcom_10919_23967com_10919_5557col_10919_23968
Pine Seedling Production in the South: A Problem Analysis
Johnson, Jon D.
Bramlett, David L.
Burns, Russell M.
Dierauf, Tom A.
McDonald, Steve E.
Stone, Jake M.
Forest Resources and Environmental Conservation
The objective of this analysis is to identify southern pine seedling production problems that if alleviated would facilitate the increased production and "quality" of seedlings needed to meet projected demand in the southeast.
2019-09-11T19:58:49Z
2019-09-11T19:58:49Z
2019-09-11T19:58:49Z
1982
Report
http://hdl.handle.net/10919/93558
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-6-82.pdf
en
FWS-6-82
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/881172023-11-29T12:15:44Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Winter 2008
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2019-03-06T18:33:48Z
2008
Periodical
http://hdl.handle.net/10919/88117
6
1
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Winter2008.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881092023-11-29T12:15:45Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Fall 2003
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:44Z
2019-03-06T18:33:44Z
2019-03-06T18:33:44Z
2003
Periodical
http://hdl.handle.net/10919/88109
1
1
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Fall2003.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935642023-11-29T12:15:45Zcom_10919_23967com_10919_5557col_10919_23968
Growth and Yield of Appalachian Mixed Hardwoods After Thinning
Harrison, Wade C.
Burkhart, Harold E.
Burk, Thomas E.
Beck, Donald E.
Forest Resources and Environmental Conservation
G-HAT (Growth of Hardwoods After Thinning) is a system of computer programs used to predict growth and yield of Appalachian mixed hardwoods after thinning. Given a tree list or stand table, along with inputs of stand age, site index, and stand basal area before thinning, G-HAT software uses species-specific individual tree equations to predict tree basal area increment and total height for the residual stand. Cubic foot volumes, based on desired merchantability standards, may be obtained for thinned trees, the residual stand, and the projected stand. G-HAT is available as a self-contained, interactive program (BASIC G-HAT) or as a library of FORTRAN subroutines (FORTRAN G-HAT). BASIC G-HAT, for personal computers, is designed for interactive, user-friendly sessions with keyboard input and screen output. Its use requires no programming ability. FORTRAN G-HAT is compatible with mainframe computers, minicomputers, and personal computers. It consists of modular subroutines which allow considerable flexibility in application, such as interface with computerized timber inventory systems and stand simulators.
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
2019-09-11T19:58:52Z
1986
Report
http://hdl.handle.net/10919/93564
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-86.pdf
en
FWS-1-86
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/881182023-11-29T12:15:46Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Spring 2009
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2009
Periodical
http://hdl.handle.net/10919/88118
7
2
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Spring09.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935632023-11-29T12:15:47Zcom_10919_23967com_10919_5557col_10919_23968
Growing and Marketing Christmas Trees in Virginia
Vodak, M.C.
Leuschner, William A.
Watson, A.E.
Forest Resources and Environmental Conservation
The purpose of this report is to assist potential and existing Christmas tree growers in making investment decisions about small Christmas tree plantations by presenting cost and revenue data and analysis of financial returns. Potential growers should find the entire report of interest although existing growers may want to concentrate their attention on the sections containing cost and revenue data and the discussion of financial analyses. This report updates Leuschner and Sellers (1975).
2019-09-11T19:58:51Z
2019-09-11T19:58:51Z
2019-09-11T19:58:51Z
1984
Report
http://hdl.handle.net/10919/93563
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-4-84.pdf
en
FWS 4-84
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/1134052023-11-29T12:15:48Zcom_10919_23967com_10919_5557col_10919_23968
FREC 2021 Annual Report
This is the 2021 annual report for the Department of Forest Resources and Environmental Conservation.
2023-01-24T19:15:03Z
2023-01-24T19:15:03Z
2023-01-24T19:15:03Z
2021
Report
http://hdl.handle.net/10919/113405
https://frec.vt.edu/content/dam/frec_vt_edu/documents/annual_report21.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935532023-11-29T12:15:49Zcom_10919_23967com_10919_5557col_10919_23968
An Analysis of Several Alternatives to Oil As an Industrial Fuel
Kluender, Richard A.
Reisinger, Thomas W.
Farrar, Kenneth D.
Stuart, William B.
Forest Resources and Environmental Conservation
This paper presents an analysis of some significant factors that should be evaluated when considering alternatives to oil burning boilers. Managers contemplating using or increasing the use of wood for energy should find the analysis particularly pertinent. A fundamental assumption of the analysis is that additional boiler capacity is to be added to an existing power generating facility. The method of analysis provides a yearly cash flow stream that tells how much better off the installation would be with an alternative to oil. A logical extension of this is the ran king of alternatives from most to least attractive.
2019-09-11T19:58:47Z
2019-09-11T19:58:47Z
2019-09-11T19:58:47Z
1981-10
Report
http://hdl.handle.net/10919/93553
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-7-82.pdf
en
FWS-7-82
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/799032023-11-29T12:15:51Zcom_10919_23967com_10919_5557col_10919_23968
Department of Forest Resources and Environmental Conservation Annual Report 2015
Forest Resources and Environmental Conservation
This is the annual report for the Department of Forest Resources and Environmental Conservation for the 2015/2016 academic year.
2017-11-01T12:44:34Z
2017-11-01T12:44:34Z
2017-11-01T12:44:34Z
2015
Annual report
http://hdl.handle.net/10919/79903
http://frec.vt.edu/
en_US
Copyright of university publications is largely held by Virginia Tech.
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/810852023-11-29T12:15:52Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2014
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2014
Periodical
http://hdl.handle.net/10919/81085
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881222023-11-29T12:15:53Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Winter 2010
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2019-03-06T18:33:49Z
2010
Periodical
http://hdl.handle.net/10919/88122
8
1
https://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Winter2010.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935702023-11-29T12:15:54Zcom_10919_23967com_10919_5557col_10919_23968
Site and Yield Information Applicable to Virginia’s Hardwoods: A Review
Evans, Thomas F.
Burkhart, Harold E.
Parker, Robert C.
Forest Resources and Environmental Conservation
In 1966 Virginia had a hardwood growing stock volume of 10.5 billion cubic feet and a hardwood sawtimber volume of almost 26. 3 billion board feet. Hardwood timber was distributed over more than 12.8 million acres of commercial forest land in the state (Knight and McClure, 1967).
This hardwood timber is converted into a multitude of finished products. Hardwoods comprise well over one-half of the total volume in Virginia's multi-million dollar forest products industry each year. Thus the hardwood resource is very important to the welfare of the citizens of the Old Dominion.
Despite the importance of hardwoods in Virginia's timber industry, most hardwood stands have not been placed under intensive forest management. An essential ingredient of a forest management program is information on the yields of timber products which can be achieved by the various tree species on different sites. Yield and site data which can be applied to Virginia's hardwoods are still relatively scarce. The purpose of this paper is to survey the primary works on the yields of hardwood species found in Virginia and to present results from studies on the relations of hardwood growth to various site conditions.
2019-09-11T19:58:54Z
2019-09-11T19:58:54Z
2019-09-11T19:58:54Z
1975
Report
http://hdl.handle.net/10919/93570
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-2-75.pdf
en
FWS-2-75
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935422023-11-29T12:15:55Zcom_10919_23967com_10919_5557col_10919_23968
Virginia’s Forest Products Industry
Wisdom, Harold W.
Hudspeth, Timothy G.
Forest Resources and Environmental Conservation
This report presents the results of an economic analysis of Virginia's forest products industry. The report is based on a special survey of wood use by the state's primary wood-using industries in 1976.
2019-09-11T19:58:43Z
2019-09-11T19:58:43Z
2019-09-11T19:58:43Z
1978
Report
http://hdl.handle.net/10919/93542
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-78a.pdf
en
FWS-3-78a
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/833452023-11-29T12:15:57Zcom_10919_23967com_10919_5557col_10919_23968
FREC Annual Report 2017
Forest Resources and Environmental Conservation
This is the 2017 annual report for the Department of Forest Resources and Environmental Conservation
2018-05-18T16:59:03Z
2018-05-18T16:59:03Z
2018-05-18T16:59:03Z
2017
Report
http://hdl.handle.net/10919/83345
http://frec.vt.edu/
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/937802023-11-29T12:15:57Zcom_10919_23967com_10919_5557col_10919_23968
RootReport Preliminary Results for 2015
Forest Resources and Environmental Conservation
We here at Virginia Tech’s RootReport are excited to release data on the 2015 native medicinal plant harvest, and would like to thank everyone who participated in our study. We are preparing to publish these results and a summary of our 3 years of data collection in greater detail, but thought it would be useful to make preliminary figures available for the many people who work with non-timber forest products. Our numbers for 14 of the more commonly traded native forest medicinal species were collected through a survey of 131 registered ginseng buyers in 15 states.
Wild-harvested material accounts for the vast majority of current output for the products we surveyed. The one exception is goldenseal (Hydrastis canadensis). A survey by the American Herbal Products Association of its members found that 24 percent of goldenseal purchased from 2005-2010 was cultivated (AHPA 2012). By comparison, the next most commonly cultivated of our surveyed products in the same period was false unicorn (Chamaelirium lutem) (4%) and black cohosh (Actaea racemosa) (2%).
2019-09-19T18:29:12Z
2019-09-19T18:29:12Z
2019-09-19T18:29:12Z
2015
Report
http://hdl.handle.net/10919/93780
https://www.rootreport.frec.vt.edu/docs/RootReportFinal8-10-2.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/935542023-11-29T12:15:58Zcom_10919_23967com_10919_5557col_10919_23968
Diameter Distributions and Yields Of Thinned Loblolly Pine Plantations
Cao, Quang V.
Burkhart, Harold E.
Lemin, Ronald C., Jr.
Forest Resources and Environmental Conservation
A growth and yield model for thinned loblolly pine plantations was developed using data from 128 0.2-acre permanent plots in the Virginia Piedmont and Coastal Plain. The Weibull function, used to characterize stand diameter distributions, was searched to insure that the resulting total basal area and average dbh estimates were identical to those predicted from stand variables using regression equations. Program WTHIN was written in standard FORTRAN to provide stand and stock tables for thinned old-field loblolly pine plantations.
Trials with different thinning intensities indicated reasonable trends, as compared with published studies.
2019-09-11T19:58:48Z
2019-09-11T19:58:48Z
2019-09-11T19:58:48Z
1982
Report
http://hdl.handle.net/10919/93554
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-82.pdf
en
FWS-1-82
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/935462023-11-29T12:15:59Zcom_10919_23967com_10919_5557col_10919_23968
Methods for Modeling Individual Tree Growth and Stand Development in Seeded Loblolly Pine Stands
Daniels, Richard F.
Burkhart, Harold E.
Spittle, Gerald D.
Somers, Greg L.
Forest Resources and Environmental Conservation
Methods were developed to model growth and development of seeded loblolly pine (Pinus taeda L.) stands, using individual trees as the basic growth units. Aggregated spatial patterns and individual tree sizes are generated at age 10. Tree diameters and heights are then incremented annually as a function of their size, site quality, competition from neighbors, and stochastic components representing genetic and microsite variability. Individual tree mortality is determined stochastically through Bernouli trials. Subroutines were developed to simulate the effects of hardwood competition and control, thinning, and fertilization. The overall model was programmed in FORTRAN and initial tests were made with published yields. The initial stand generation components were calibrated using a comprehensive set of data from young seeded stands of loblolly pine, but individual tree growth and mortality components relied on previously published relationships developed for plantations. Results indicated that, in order to accurately model stand structure, the growth and mortality relationships must be calibrated for seeded stands. Data collection procedures, calibration methods, and recommendations for further work are discussed.
2019-09-11T19:58:45Z
2019-09-11T19:58:45Z
2019-09-11T19:58:45Z
1979
Report
http://hdl.handle.net/10919/93546
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-79.pdf
en
FWS-1-79
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/880412023-11-29T12:16:00Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Winter 2019
Department of Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2019-03-01T17:23:31Z
2019-03-01T17:23:31Z
2019-03-01T17:23:31Z
2019-03
Periodical
http://hdl.handle.net/10919/88041
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/239772023-11-29T12:16:01Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2009
Sherman (Coordinator), Tracey
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T15:11:02Z
2013-11-11T15:11:02Z
2013-11-11T15:11:02Z
2009
Periodical
http://hdl.handle.net/10919/23977
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/823562023-11-29T12:16:03Zcom_10919_23967com_10919_5557col_10919_23968
FREC Highlights of 2012
Forest Resources and Environmental Conservation
This report highlights accomplishments in learning, discovery, and engagement in the Department of Forest Resources and Environmental Conservation (FREC) during 2012.
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2018-02-26T13:28:24Z
2012
Report
http://hdl.handle.net/10919/82356
https://frec.vt.edu/
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/881102023-11-29T12:16:04Zcom_10919_23967com_10919_5557com_10919_5523col_10919_23968col_10919_5548
The Virginia Geospatial Newsletter, Winter 2006
Forest Resources and Environmental Conservation
Virginia Cooperative Extension (VCE)
The purpose of the quarterly Virginia Geospatial Newsletter is to highlight innovative geospatial products and services throughout the Commonwealth and to widely disseminate geospatial knowledge and awareness throughout Virginia.
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2019-03-06T18:33:47Z
2006
Periodical
http://hdl.handle.net/10919/88110
4
1
http://www.gep.frec.vt.edu/pdfFiles/VAGeoNewsletter-Winter2006.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/810802023-11-29T12:16:05Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall 2016
Forest Resources and Environmental Conservation
Forestry is the newsletter of the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2017-12-07T18:21:59Z
2016
Periodical
http://hdl.handle.net/10919/81080
https://frec.vt.edu/index/archive_news.html
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/986312023-11-29T12:16:06Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Fall/Winter 2019-2020
Forest Resources and Environmental Conservation
The combined Fall/Winter 2019-2020 issue of Forestry, the newsletter for the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2020-06-01T13:11:59Z
2020-06-01T13:11:59Z
2020-06-01T13:11:59Z
2020
Periodical
http://hdl.handle.net/10919/98631
https://frec.vt.edu/content/dam/frec_vt_edu/documents/2020_winter.pdf
https://frec.vt.edu/content/dam/frec_vt_edu/documents/frec2020.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/823552023-11-29T12:16:07Zcom_10919_23967com_10919_5557col_10919_23968
FREC Highlights, 2011
Forest Resources and Environmental Conservation
This report highlights accomplishments in learning, discovery, and engagement in the Department of Forest Resources and Environmental Conservation (FREC) during 2011.
2018-02-26T13:28:23Z
2018-02-26T13:28:23Z
2018-02-26T13:28:23Z
2011
Report
http://hdl.handle.net/10919/82355
https://frec.vt.edu/
en_US
http://creativecommons.org/licenses/by-nc/3.0/us/
Creative Commons Attribution-NonCommercial 3.0 United States
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/239712023-11-29T12:16:08Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Spring 2012
Hollandsworth, Kathryn
Forest Resources and Environmental Conservation
Wildlife research
Environmental sciences
Forests and forestry
Newsletters
Periodicals
College of Natural Resources and Environment
Virginia Polytechnic Institute and State University
Department of Forest Resources and Environmental Conservation
2013-11-11T14:33:19Z
2013-11-11T14:33:19Z
2013-11-11T14:33:19Z
2012
Periodical
http://hdl.handle.net/10919/23971
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Department of Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/935622023-11-29T12:16:09Zcom_10919_23967com_10919_5557col_10919_23968
A Model for Assessing Hardwood Competition Effects on Yields of Loblolly Pine Plantations
Burkhart, Harold E.
Sprinz, Peter T.
Forest Resources and Environmental Conservation
A model was developed to predict pine survival, growth and yield for unthinned loblolly pine plantations with varying levels of hardwood competition in the main canopy. Inputs for the model are number of loblolly pine trees per acre planted, site index for loblolly pine, percent of hardwood basal area in the main canopy of the stand, and age(s) at which output is desired. From these inputs the model computes, by 1-inch dbh classes, the number of trees surviving, basal area, and volumes per acre.
The model, which was constructed using sample plot data from old-field and cutover-site plantations, was validated with independent data from a hardwood conversion/site preparation study. Overall, there was close agreement between the observed values and the model predictions.
2019-09-11T19:58:51Z
2019-09-11T19:58:51Z
2019-09-11T19:58:51Z
1984
Report
http://hdl.handle.net/10919/93562
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-3-84.pdf
en
FWS-3-84
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources
oai:vtechworks.lib.vt.edu:10919/937362023-11-29T12:16:10Zcom_10919_23967com_10919_5557col_10919_23968
Forestry, Summer 2019
Forest Resources and Environmental Conservation
The Summer 2019 issue of Forestry, the newsletter for the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2019-09-17T17:49:54Z
2019-09-17T17:49:54Z
2019-09-17T17:49:54Z
2019
Periodical
http://hdl.handle.net/10919/93736
https://frec.vt.edu/content/dam/frec_vt_edu/documents/2019_summer_news.pdf
en_US
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Forest Resources and Environmental Conservation
oai:vtechworks.lib.vt.edu:10919/1035752023-11-29T12:16:12Zcom_10919_23967com_10919_5557col_10919_23968
Forestry Spring, Summer, Fall 2020
The combined spring/summer/fall 2020 issue of Forestry, the newsletter for the Department of Forest Resources and Environmental Conservation at Virginia Tech.
2021-06-03T19:48:56Z
2021-06-03T19:48:56Z
2021-06-03T19:48:56Z
2020
Periodical
http://hdl.handle.net/10919/103575
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
Virginia Tech
oai:vtechworks.lib.vt.edu:10919/935682023-11-29T12:16:13Zcom_10919_23967com_10919_5557col_10919_23968
The 1972 Virginia Outdoor Recreation Inventory
Leuschner, William A.
Groves, David L.
Bolger, William T.
Stokes, Gerald L.
Forest Resources and Environmental Conservation
The Virginia Commission of Outdoor Recreation coordinated the inventorying of outdoor recreation facilities in the state between June and December, 1972. The inventory is an integral part of the Virginia Outdoors Plan Information System. Its primary purpose was to provide data for the Commission to formulate and write the statewide comprehensive outdoor recreation plan. However, the intended use of these data was much broader. It was envisaged that they would be useful for other planning activities, such as those conducted by federal and state agencies or the 22 Planning District Commissions in Virginia, as well as for various research activities, special studies, and teaching.
The purpose of this publication is threefold. The first is to encourage further use of the data by informing the public of its existence and the specific variables contained therein. The second is to present a limited but comprehensive set of data which can be used to answer general inquiries and which will save interested parties the trouble of writing to obtain it. Finally, we wish to inform the public of the availability of the data in other forms which may better suit individual needs but which would be too numerous to publish in this bulletin.
2019-09-11T19:58:53Z
2019-09-11T19:58:53Z
2019-09-11T19:58:53Z
1974
Report
http://hdl.handle.net/10919/93568
https://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-74a.pdf
en
FWS-1-74
http://rightsstatements.org/vocab/InC/1.0/
In Copyright
Virginia Tech. Division of Forestry and Wildlife Resources