Canadian Forest Service Publications

Effect of competition on wood relative density development in red pine (Pinus resinosa Ait.) stands. 1997. Larocque, G.R. Pages V23-V28 in S.Y. Zhang, R. Gosselin, and G. Chauret, editors. Timber management toward quality and end-product value, Proceedings: Canadian Tree Improvement Association /IUFRO International Wood Quality Workshop. August 18-22, 1997, Quebec, Quebec. Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, Sainte-Foy, Quebec.

Year: 1997

Available from: Laurentian Forestry Centre

Catalog ID: 16766

Language: English

CFS Availability: PDF (request by e-mail)


Forest management is becoming more and more intensified in North America in order to increase sawlog production in the shortest possible time. The most applied silvicultural treatment consists in thinning stands to increase the growth rate of residual trees. While much information has been gathered on the effects of thinning treatments on individual tree growth, much less work has been undertaken to examine the effectson wood quality. Thus, there is a need to look more closely at the relationship between stand dynamics and wood formation. The present study examined how different levels of competitive stress affect wood relative density of red pine (Pinus resinosa Ait.) for different ages. As the stands grew older, ring relative density and earlywood and latewood relative densities increased and the proportion of earlywood decreased. However, these changes, which were closely related to crown development, occurred more and more slowly with a decrease in the intensity of competition.

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