Author： Bechtold W.A.
Publisher： Society of American Foresters
ISSN： 0148-4419
Source： Southern Journal of Applied Forestry, Vol.27, Iss.4, 2003-11, pp. : 269-278
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Abstract
The mean crown diameters of stand-grown trees were modeled as a function of stem diameter, live-crown ratio, stand basal area, latitude, longitude, elevation, and Hopkins bioclimatic index for 87 tree species in the eastern United States. Stem diameter was statistically significant in all models, and a quadratic term for stem diameter was required for some species. Crown ratio and/or Hopkins index also improved the models for many species. Coefficients of variation from the regression solutions ranged from 18 to 35%, and model
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