Crown-diameter prediction models for 87 species of stand-grown trees in the Eastern United States

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 m...

Full description

Saved in:
Bibliographic Details
Published inSouthern journal of applied forestry Vol. 27; no. 4; pp. 269 - 278
Main Author Bechtold, W.A
Format Journal Article
LanguageEnglish
Published Bethesda Oxford University Press 01.11.2003
Subjects
diameter
diameter at breast height (dbh)
equations
forest stands
forest trees
mathematical models
Prediction models
tree and stand measurements
tree crown
width
Eastern United States
Online AccessGet full text

Cover

More Information
Summary: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 ranged from 0.15 to 0.88. Simpler models, based only on stem diameter and crown ratio, are also presented. South. J. Appl. For. 27(4):269–278.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0148-4419
1938-3754
DOI:10.1093/sjaf/27.4.269