Beetle-Killed Engelmann Spruce its Deterioration in Colorado

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An estimated 4.3 billion board feet of Engelmann spruce and lodge-pole pine sawtimber was killed by the Engelmann spruce beetle during a major Colorado epidemic from 1941 to 1952. A study on the rate of deterioration in these stands was begun in 1951. Results indicate that about 40 percent of the original cubic-foot volume has been lost 20 years after kill. About one-third of this loss is due to decay in standing trees, two-thirds to windthrow. It is anticipated that windthrow will be a progressively more important deterioration factor in the future.

Document Type: Journal Article

Affiliations: Research scientist, College of Forestry and Range Management, Colorado State University

Publication date: July 1, 1965

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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.
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