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Using Crown Ratio in Yellow-Poplar Compatible Taper and Volume Equations

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Linear and nonlinear crown ratio (CR) functions were incorporated into a segmented taper and cubic foot volume function developed for yellow-poplar in West Virginia. The inclusion of a CR variable provided significantly different parameter estimates but only modest improvement in the prediction of upper stem size and volume. Sample trees from the west central region of West Virginia exhibited a larger improvement. The main differences were concentrated in the stem section above 60% of total height.

Keywords: crown ratio; segmented model; taper and volume equations; yellow-poplar

Document Type: Research Article

Publication date: December 1, 2007

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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 Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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