Strip Thinning and Selective Thinning in Douglas-Fir
Abstract:Tree growth was compared on plots that had been strip thinned, selectively thinned, and not thinned in a 35-year-old Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stand. The ratio of basal area increment five years after thinning to basal area increment five years before thinning was larger for all thinning treatments than for the control. However, trees farther than 10 feet from the edges of thinned strips did not respond. Individual tree growth and net stand basal area increment were greater in selectively thinned plots than strip-thinned ones after similar percentages of initial basal area were removed in each. Net stand basal area increment after five years was greater in selectively thinned plots than in strip-thinned ones even where 20 percent more trees had been removed. Nevertheless, lower logging costs and increased silvicultural flexibility may make strip thinning a desirable alternative in some cases.
Document Type: Journal Article
Affiliations: Associate Professor, Department of Forest Science, Oregon State University, Corvallis 97331
Publication date: June 1, 1983
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- The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
2015 Impact Factor: 1.476
Ranking: 22 of 66 in forestry
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