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Site Preparation for Establishing Interior Spruce in British Columbia: Trials at Upper Coalmine and Mackenzie

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Two trials (“Upper Coalmine” and “Mackenzie”) were begun in the 1980s in the Prince George Forest Region, B.C., to evaluate a total of 13 site preparation treatments for establishing interior spruce (Picea glauca × engelmannii) in the Engelmann Spruce-Subalpine Fir and Sub-Boreal Spruce biogeoclimatic zones. Treatments included mounding (with various thicknesses of mineral soil “capping”), patch scarification, blading, disk trenching, and herbiciding. In each trial, five blocks each contained one 48 or 80 tree plot/treatment. Trees were monitored for 10 yr at Mackenzie and 15 yr at Upper Coalmine. Large mounds have had consistent biological success. Tree seedling response to blading was site specific; blading at Mackenzie was not significantly inferior to the best (Ministry mound) treatment, but at Upper Coalmine was no better than the untreated control. West. J. Appl. For. 16(1):9–17.

Keywords: British Columbia; Interior spruce; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; mounding; natural resource management; natural resources; plantation establishment; site preparation

Document Type: Miscellaneous

Affiliations: 1: Forest Practices Branch, British Columbia Ministry of Forests, 1st Floor, 1450 Government St., Victoria, British Columbia, Canada, V8W 9C2 2: 5266 Old West Saanich Road, RR 3, Victoria, British Columbia, Canada, V8X 3X1 3: 670 Sand Pines Drive, Comox, British Columbia, Canada, V9M 3V1

Publication date: 2001-01-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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