Height Growth and Site Index Curves for Douglas-Fir on Dry Sites in the Willamette National Forest

摘要

Equations and curves are presented for estimating height and site index of Douglas-fir (Pseudotsuga menziesii) on hot, dry sites in the Willamette National Forest in western Oregon. The equations are based on the dissected stems of 27 trees. The curves differ from those previously published for Douglas-fir. Instructions are presented for their use.