Merchantable Sawlog and Bole-length Equations for the Northeastern United States
Auteur : Daniel A. Yaussy, Martin E. Dale
Date de publication : 1991
Éditeur : United States Department of Agriculture, Forest Service, Northeastern Forest Experiment Station
Nombre de pages : 7
Résumé du livre
S2Describes development of merchantable-height equations in terms of sawlog and bole length for important tree species of the Northeastern United States. A modified Richards growth model is used to develop species-specific coefficients for 25 common species or species groups. Variability in merchantable sawlogs or bole length is accounted for by species, d.b.h., and site index. Predicted merchantable height when used in conjunction with published cubic-foot-volume or board-foot-volume equations provide realistic estimates of stand volume for average stand conditions in the Northeastern United States. Regression coefficients for merchantable bole length and sawlogs have been incorporated into NE-TWIGS.S3.