A Compatible System for Predicting the Volume and Diameter of Sweetgum Trees to any Height
A compatible system of equations is presented for predicting merchantable volume and height of naturally grown sweetgum (Liquidambar styraciflua L.) trees. Volume to any height [v(h)] is predicted with the following function: v(h) = V- V[(H - h)/(H -.5)]c where c = a parameter to be estimated, H = total height in feet, h = partial height of interest in feet, and V = total cubic foot volume. Diameter squared at any height [d²(h)] is predicted with the function: d²(h) = Vc(H - h)(c - 1)(H - .5)-c/.0054542 The total tree volume prediction equation is V = D.b.h.²(H - 4.5)(1 - c)(H - .5)c(.0054542)/c The height to any diameter [h(d)] can be predicted using h(d) = H - (d²/v/c)(H - .5)c(.0054542)[1/(c - 1)] D.b.h. should be multiplied by .97 to make it comparable with a ruler measured d.b.h. on a cross-sectional log. These equations provide accurate estimates and are simple to use with programmable calculators.
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Document Type: Journal Article
Affiliations: Professor, Department of Forestry, Mississippi Agricultural and Forestry Experiment Station at Mississippi State University
Publication date: 1982-08-01
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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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