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Estimating Defect in Mature and Overmature Stands of Three Rocky Mountain Conifers

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Decay and other defects in trees constitute a perplexing problem in the determination of merchantable timber volume. Inaccuracy in net volume estimation is perhaps the greatest disadvantage to the practice of selling stumpage. As a contribution toward efficient cruising and net volume determination, this article presents a method of estimating cull volume in the standing tree. It describes the important defect indicators for lodgepole pine, Engelmann spruce, and alpine fir in the Central Rocky Mountain region; it outlines procedures to be followed in the estimation of defect; and concludes by showing the accuracy attained in actual field trials.
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Document Type: Journal Article

Affiliations: Silviculturist, Rocky Mountain Forest and Range Experimental Station maintained by U. S. Department of Agriculture, Forest Service, in cooperation with Colorado A & M College, at Fort Collins

Publication date: 1950-09-01

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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.

    2016 Impact Factor: 1.675 (Rank 20/64 in forestry)

    Average time from submission to first decision: 39.6 days*
    June 1, 2016 to Feb. 28, 2017

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