Nigh G.D., Krestov P.V., Klinka K.
Northwest Science 2002; 76(3): 202-212
Trembling aspen, a common hardwood species in the interior of British Columbia, is becoming an increasingly important timber crop species, especially m the northeast corner of the province. Better growth and yield information for aspen is required to manage this species properly, We provide height-age models for estimating site height and site index. One-hundred and thirty-five stem analysis plots were established in six biogeoclimatic zones. Three trees in the 0,04 ha plots were selected and stem analyzed, and ecological data were collected at each plot. The stem analysis data Were Split into a model calibration and test data set. Two models were fit to the calibration data: a base model and an extended model that is calibrated for the six biogeoclimatic zones. Both models adequately estimate the height of trembling aspen in British Columbia. The base model was compared to two models for aspen in Alberta, which showed that there were no large differences in the height growth of aspen, except on lower productivity sites.
