Site index curves for white fir in the southwestern United States developed using a guide curve method.

摘要

Site index curves for white fir (Abies concolor) sampled from a total of 264 stands representing even-aged or uneven-aged, mixed conifer forests in Arizona, New Mexico, and southwestern Colorado, USA, were developed using height-age measurements and an estimated guide curve and 95% confidence intervals for individual predictions. The curves were developed using height-age data for 1048 white firs from 263 study sites distributed across eight national forests. These site index curves can be used with standard inventory data for estimating potential site productivity for white fir in the southwestern United States..