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Log Grade Prediction for Standing Yellow-Poplar Trees in Eastern Kentucky

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Information on the quality of logs in standing trees can aid resource managers and landowners in maximizing returns from timber harvests. However, little is published about the grade of logs in yellow-poplar (Liriodendron tulipifera) stands. In this study, discriminant analysis was used to develop classification functions to predict USDA Forest Service Log Grades for standing yellow-poplar trees in eastern Kentucky. The variables used to predict log grade are those commonly collected during forest inventory. This analysis indicates the importance of log position, merchantable height, and tree grade to log grade determination. The classification functions developed from the modeling data set correctly classified 80.9% of the log grades in a validation data set. These results provide a framework to resource managers and landowners for assessing yellow-poplar log quality in standing trees. South. J. Appl. For. 27(1):61–65.
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Keywords: Discriminant analysis; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; hardwood management; log grade; natural resource management; natural resources; valuation; yellow-poplar

Document Type: Miscellaneous

Affiliations: University of Arkansas-Monticello, Monticello, AR, 71656,

Publication date: 2003-02-01

More about this publication?
  • 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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