Now showing items 1-20 of 93

    • Yields of Old-Field Loblolly Pine Plantations 

      Burkhart, Harold E.; Parker, Robert C.; Strub, Mike R.; Oderwald, Richard G. (Virginia Tech. Division of Forestry and Wildlife Resources, 1972-12)
      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 ...
    • Costs of Establishing Loblolly Pine Plantations In Virginia: Methodology and Estimates 

      Thompson, Emmett F.; Shores, Michael E.; Sullivan, Alfred D. (Virginia Tech. Division of Forestry and Wildlife Resources, 1973-02)
      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 ...
    • The Wildlife Management Planning Game: Instructions to Participants 

      Guynn, David C.; Sullivan, Alfred D. (Virginia Tech. Division of Forestry and Wildlife Resources, 1973-09)
      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 ...
    • The Wildlife Management Planning Game: Administrative Manual 

      Sullivan, Alfred D.; Guynn, David C. (Virginia Tech. Division of Forestry and Wildlife Resources, 1973-09)
      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. ...
    • Economic Guidelines for Loblolly Pine Management in Virginia 

      Thompson, Emmett F.; Mantie, Robert C.; Sullivan, Alfred D.; Burkhart, Harold E. (Virginia Tech. Division of Forestry and Wildlife Resources, 1973-12)
      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 ...
    • The 1972 Virginia Outdoor Recreation Inventory 

      Leuschner, William A.; Groves, David L.; Bolger, William T.; Stokes, Gerald L. (Virginia Tech. Division of Forestry and Wildlife Resources, 1974)
      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 ...
    • Computer-Implemented Simulation as a Planning Aid for State Fisheries Management Agencies 

      Clark, Richard D., Jr.; Lackey, Robert T. (Virginia Tech. Division of Forestry and Wildlife Resources, 1975)
      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 ...
    • The Economics of Producing and Marketing Christmas Trees on Small Plantations in Virginia 

      Leuschner, William A.; Sellers, William A. (Virginia Tech. Division of Forestry and Wildlife Resources, 1975)
      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 ...
    • Site and Yield Information Applicable to Virginia’s Hardwoods: A Review 

      Evans, Thomas F.; Burkhart, Harold E.; Parker, Robert C. (Virginia Tech. Division of Forestry and Wildlife Resources, 1975)
      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 ...
    • Simulation of Individual Tree Growth and Stand Development in Managed Loblolly Pine Plantations 

      Daniels, Richard F.; Burkhart, Harold E. (Virginia Tech. Division of Forestry and Wildlife Resources, 1975)
      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 ...
    • Aids for Unit Planning on the Appalachian National Forests 

      Burkhart, Harold E.; Leuschner, William A.; Stuck, R. Dean; Porter, John R.; Reynolds, Marion R. (Virginia Tech. Division of Forestry and Wildlife Resources, 1976)
      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 ...
    • A General Population Dynamics Theory for Largemouth Bass 

      Jester, Douglas B., Jr.; Garling, Donald L, Jr.; Tipton, Alan R.; Lackey, Robert T. (Virginia Tech. Division of Forestry and Wildlife Resources, 1977)
      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 ...
    • The 1977 Virginia Outdoor Recreation Survey 

      Spittle, Gerald D.; Buhyoff, Gregory J.; Davy, John R., Jr.; McElwee, Robert L. (Virginia Tech. Division of Forestry and Wildlife Resources, 1978)
      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 ...
    • The 1977 Virginia Outdoor Recreation Demand Survey 

      Roggenbuck, Joseph W. (Virginia Tech. Division of Forestry and Wildlife Resources, 1978)
      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 ...
    • The 1977 Virginia Outdoor Recreation Needs Assessment 

      Roggenbuck, Joseph W. (Virginia Tech. Division of Forestry and Wildlife Resources, 1978)
      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 ...
    • Virginia’s Forest Products Industry 

      Wisdom, Harold W.; Hudspeth, Timothy G. (Virginia Tech. Division of Forestry and Wildlife Resources, 1978)
      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.
    • 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. (Virginia Tech. Division of Forestry and Wildlife Resources, 1979)
      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 ...
    • 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. (Virginia Tech. Division of Forestry and Wildlife Resources, 1980)
      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 ...
    • Evaluation of Ranked Set Sampling for Estimating Shrub Phytomass in Appalachian Oak Forests 

      Martin, Wayne L.; Sharik, Terry L.; Oderwald, Richard G.; Smith, David Wm. (Virginia Tech. Division of Forestry and Wildlife Resources, 1980)
      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, ...
    • A Qualitative Analysis of The Southern Pine Beetle's Wildlife Impact 

      Maine, John D.; Leuschner, William A.; Tipton, Alan R. (Virginia Tech. Division of Forestry and Wildlife Resources, 1980)
      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 ...