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 r-square values rangedfrom 0.15 to 0.88. Simpler models, based only on stem diameter and crown ratio, are also presented.
Keywords
Largest crown width,
crown width,
crown diameter,
tree crown modeling
Citation
Bechtold, William A. 2003. Crown-Diameter Prediction Models for 87 Species of Stand-Grown Trees in the Eastern United States. South. J. Appl. For. 27(4):269-278.