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The Influence of Thinning on the Proportion of Peeler, Sawtimber, and Pulpwood Trees in Loblolly Pine Plantations

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Data from a long-term, region-wide thinning study were used to examine the proportion of pulpwood, sawtimber, and peeler quality trees in unthinned, once-thinned, and twice-thinned plantations. Results suggest that the thinning treatments have had a significant influence on the product distribution in these stands over the 21-year history of the study. Proportional odds modeling methods were used to develop equations for predicting product proportions from dbh, the basal area before and after thinning (thinning intensity), and the number of thinnings imposed. South. J. Appl. For. 29(3):158–162.
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Keywords: Wood products; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; growth and yield; natural resource management; natural resources; proportional odds model; thinning

Document Type: Regular Article

Affiliations: 1: Department of Forestry Virginia Polytechnic Institute and State University Blacksburg VA 24061 (540) 231-7263, Email: ralph@vt.edu 2: Department of Forestry Virginia Polytechnic Institute and State University Blacksburg VA 24061

Publication date: 2005-08-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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