The Economic Significance Of Mortality In Old Growth Douglas Fir Management

Author : Robert O. McMahon
Publisher : Forgotten Books
ISBN 13 : 9780267075171
Total Pages : 34 pages
Book Rating : 4.0/5 (751 download)

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Download or read book The Economic Significance of Mortality in Old-Growth Douglas-Fir Management (Classic Reprint) written by Robert O. McMahon and published by Forgotten Books. This book was released on 2018-03-19 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Economic Significance of Mortality in Old-Growth Douglas-Fir Management In extent and in proportion of high-quality logs contained, old-growth Douglas-fir stands in the Douglas-fir subregion-western Oregon and west ern Washington -are a substantial capital asset. These stands of Old growth Douglas-fir and associated species cover some 3 million acres, and for the next 50 to 100 years they will be the primary source of raw material for the forest industry in the subregion. If stumpage were valued at $20 per thousand board feet, these old-growth stands would have a gross worth of $3. 3 billion. Contrary to general belief, old-growth Douglas-fir stands in the sub region are not static. The Douglas-fir component alone may actually show a gross growth per acre of 3 to 558 board feet annually, while total gross growth of all Species in these stands may range from 207 to 837 board feet per acre per year However, part of the volume in these stands is lost each year because o - f death from natural causes (fig. Such loss varies from stand to stand; it may equal and often exceeds gross growth. More over, the heaviest loss is concentrated in Douglas-fir, the high-value compo nent of these stands. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.