Forestry Branch, Departmental Publication No. 1156.
The Department of Forestry has been carrying on silvicultural research in the white spruce (Picea glauca (Moench) Voss) and trembling aspen (Populus tremuloides Michx.) cover types in the Mixedwood Forest Section of Alberta, Saskatchewan and Manitoba for about 40 years. Because of the needs of industry most of this research has been focused on spruce, and only as small portion on aspen. Much of the research is concerned with basic problems and the findings in one area may be applied directly or with minor modification throughout the entire Mixedwood Forest Section. Only a minor part of the total effort is of such an applied nature that application of results is feasible only on a local basis.
Jarvis, J. M.; Steneker, G. A.; Waldron, R. M.; Lees, J. C. 1966. Review of Silvicultural Research: White Spruce and Trembling Aspen Cover Types, Mixedwood Forest Section, Boreal Forest Region, Alberta-Saskatchewan-Manitoba . Forestry Branch, Departmental Publication No. 1156.