Canadian Forestry Service Pacific Forestry Centre

Fifty-six forested plant communities in the Lake Laberge Ecoregion. Yukon Territory, are described in terms of appearance, characteris-tic and associated species, landform, soils, successional status, and productivity. A primary objective was to describe the communi-ties so that forest and land managers, land-use planners, environ-mental impact assessors, and landscape architects could identify the communities in the field. Wildfire has played a prominent role in stand development, and virtually all current stands are in some suc-cessional stage. It is impracticable to describe every assemblage of seral species, consequently those of infrequent occurrence are grouped with those occurring over a large area or in several places. Forest productivity is influenced mostly by site conditions within a regional climate, but stand history, age, and associated vegetation must be considered in tree growth measurements. Productivity rat