Canadian Forest Service Publications

Ecoregions of Yukon Territory. 1977. Oswald, E.T.; Senyk, J.P. Environment Canada, Canadian Forestry Service, Pacific Forest Research Centre, Victoria, BC. Information Report BC-X-164. 115 p.

Year: 1977

Available from: Pacific Forestry Centre

Catalog ID: 1723

Language: English

Series: Information Report (PFC - Victoria)

CFS Availability: PDF (download)

Abstract

A reconnaissance level biophysical survey of the Yukon Territory was conducted during 1975. Twenty-two ecoregions were recognized and described in terms of the biophysical data available, either collected during the survey or from literature reviewed. The primary feature used to segregate and describe the ecoregions was the vegetation on different landforms under a regional climate. This was augmented by describing the distribution and extent of permafrost, geological history and terrain features.

The lower elevation terrain in southern Yukon Territory is mostly forested with a variety of boreal coniferous and hardwood tree species. With increasing elevation and latitude, the tree density declines and the dominant vegetation becomes arctic and alpine tundra. Shrub communities have a high frequency and cover, especially across the ecotone from forest to tundra. Ground vegetation, primarily moss cover, plays a significant role in the development and persistence of permafrost.

The relationship among several biophysical parameters is discussed in light of available information. Research of a more intensive nature is necessary to establish more detailed correlations.