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

Document Type: Research Article

Publication date: 2007-12-01

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