Global ETD Search

1	Trembling aspen site index in relation to environmental measures of site quality Klinka, Karel January 2001 (has links) Trembling aspen (Populus tremuloides Michx.) is one of the most common tree species in the boreal and temperate forests of North America. It grows on many different sites and associates with a variety of tree species. In BC, aspen is frequent throughout all submontane and montane continental forested zones. Relationships between environmental factors and forest productivity have been the subjects of many studies. Most of these studies, using various topographic, soil, physical and chemical properties as independent variables, had limited success in accounting for the variation in SI over a large geographic area. The objectives of this study were (1) to quantify relationships between aspen SI and environmental factors at two spatial scales, and (2) to develop predictive SI models from easily measurable environmental factors. Trembling aspen Populus tremuloides Elevation Forest productivity Climate Interior douglas-fir Forest site quality Site index Boreal spruce Montane spruce Interior cedar – hemlock White spruce Black spruce Sub-boreal spruce Environmental indicators, Biological