Canadian Forest Service Publications

An economic analysis of fertilization and thinning effects on Douglas-fir stands at Shawnigan Lake. 1989. Duke, K.M.; Townsend, G.M.; White, W.A. Forestry Canada, Pacific Forestry Centre, Victoria, BC. Information Report BC-X-312. 19 p.

Year: 1989

Issued by: Pacific Forestry Centre

Catalog ID: 2858

Language: English

Series: Information Report (PFC - Victoria)

Availability: Order paper copy (free), PDF (download)

Mark record


An economic analysis of the Forestry Canada silviculture experiment near Shawnigan Lake, British Columbia is conducted. Y-XENO, a single-tree density-dependent growth model is used to project, from age 24 to 120 years, nine combinations of thinning and fertilization for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) on a poor site. Costs and benefits as a function of stand diameter are estimated, and forestry investment criteria are used to evaluate each treatment on both an incremental and a regime basis. The effect of assumptions of rising real prices and treatment of silviculture costs as an initial investment and alternatively as a harvest cost are examined. The best treatment was found to be a combination of heavy thinning and fertilization.