Declining Root Strength in Douglas-Fir After Felling as a Factor in Slope Stability (Classic Reprint) - Hardcover

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Excerpt from Declining Root Strength in Douglas-Fir After Felling as a Factor in Slope Stability

The role of tree root strength in the stability of slopes has been the subject of speculation and experimentation for several years. There is an increasing need to understand the effect of tree root strength on slope stability wherever land with a high potential for slope failure provides valuable timber and water resources. Land managers must have quantitative data on the effects of timber removal upon slope stability to make decisions as to where, how much, and by what method timber may be safely harvested from areas where landslides are common.

This study originated as a result of the concern by the Bureau of Land Management (elm) in western Oregon over timber harvesting on shallow soils having a high potential for landslides. The lands support old-growth timber stands of up to board feet per acre, with Coast Douglas - fir (pseudotsuga menziesii [mirb.] Franco) the principal commercial species. In addition, all of the larger streams support anadromous fish.

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