Beetle-Killed Engelmann Spruce its Deterioration in Colorado
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.
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Document Type: Journal Article
Affiliations: Research scientist, College of Forestry and Range Management, Colorado State University
Publication date: 01 July 1965