Projecting Crown Measures for Loblolly Pine Trees Using a Generalized Thinning Response Function
Crown size is an important measure of tree vigor. Measures of crown have been used to predict response to silvicultural practices such as thinning and fertilization. This study was aimed toward examining the projection of crown measures and developing a new measure of thinning effect on crown development. Results showed that using a crown height increment model that projects crown size directly or an allometric model, which derives crown ratio from tree diameter and height information, can be an effective means of modeling crown size for individual trees. By incorporating a new thinning response function into the equations, crown dimensions can be projected for thinned and unthinned stand conditions. This new thinning response function is based on biological considerations and is sensitive to thinning intensity, age of thinning, and elapsed time since thinning. For Sci. 41(1):43-53.
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Document Type: Journal Article
Affiliations: Senior Research Associate, Department of Forestry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0324
Publication date: 1995-02-01
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- Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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