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Methods for Modeling Individual Tree Growth and Stand Development in Seeded Loblolly Pine Stands

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dc.contributor.authorDaniels, Richard F.en
dc.contributor.authorBurkhart, Harold E.en
dc.contributor.authorSpittle, Gerald D.en
dc.contributor.authorSomers, Greg L.en
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.date.accessioned2019-09-11T19:58:45Zen
dc.date.available2019-09-11T19:58:45Zen
dc.date.issued1979en
dc.description.abstractMethods 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.en
dc.description.sponsorshipThis study was funded partly by a U. S. Department of Agriculture program entitled, ''The Expanded Southern Pine Beetle Research and Applications Program" (grant number CSRS 704-15-1); partly by a cooperative study with the U. S. Forest Service, Southeastern Area State and Private Forestry; and partly by the VPI & SU Loblolly Pine Growth and Yield Research Cooperative.en
dc.format.extent55 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.sourceurlhttps://frec.vt.edu/content/dam/frec_vt_edu/research/fws/FWS-1-79.pdfen
dc.identifier.urihttp://hdl.handle.net/10919/93546en
dc.language.isoenen
dc.publisherVirginia Tech. Division of Forestry and Wildlife Resourcesen
dc.relation.ispartofseriesFWS-1-79en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleMethods for Modeling Individual Tree Growth and Stand Development in Seeded Loblolly Pine Standsen
dc.typeReporten
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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