Download or read book Growth and Yield 32 Years After Commercially Thinning 56 year old Western Hemlock written by British Columbia. Ministry of Forests and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Yield of Western Hemlock in the Pacific Northwest Following Thinning Near the Time of Initial Crown Closing written by Gerald E. Hoyer and published by . This book was released on 1987 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yields of Repeated High and Low Commercial Thinnings of Immature Coastal Western Hemlock written by Donald E. Hilt and published by . This book was released on 1975 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commercial thinnings in a 50-year-old stand of nearly pure, well stocked, even-aged western hemlock (Tsuga heterophylla) on the Hemlock Experimental Forest near Hoquiam, Washington, began in 1952 and ended in 1968. The experiment consisted of two replications of four different thinning treatments, high and low thinning, both at frequent and infrequent intervals. Volumes removed in thinning ranged from 41 to 107 percent of the gross cubic volume increment for the experiment. Field layout of the experiment and methods of analyses are discussed in detail. All thinned treatments had a higher growth percent than their respective control areas. Thinning also indicated distinct improvements in average diameter increment and realized increment, which is the volume harvested in thinning plus the volume added to the growing stock. Gross growth and mortality were not greatly affected by thinning. Although thinning in general produced positive results, no single type of thinning treatment could be isolated as the 'best' method.
Download or read book Silvicultural Research and the Evolution of Forest Practices in the Douglas fir Region written by and published by . This book was released on 2007 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silvicultural practices in the Douglas-fir region evolved through a combination of formal research, observation, and practical experience of forest managers and silviculturists, and changing economic and social factors. This process began more than a century ago and still continues. It has had a great influence on the economic well-being of the region and on the present characteristics of the regions forests. This long history is unknown to most of the public, and much of it is unfamiliar to many natural resource specialists outside (and even within) the field of silviculture. We trace the history of how we got where we are today and the contribution of silvicultural research to the evolution of forest practices. We give special attention to the large body of information developed in the first half of the past century that is becoming increasingly unfamiliar to both operational foresters andperhaps more importantlyto those engaged in forestry research. We also discuss some current trends in silviculture and silviculture-related research.
Download or read book Growth and Yield of Western Hemlock in the Pacific Northwest Following Thinning Near the Time of Initial Crown Closing Classic Reprint written by Gerald E. Hoyer and published by Forgotten Books. This book was released on 2018-09-10 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Growth and Yield of Western Hemlock in the Pacific Northwest Following Thinning Near the Time of Initial Crown Closing At almost any year during the first 25 years of a young forest stand, the manager could thin to specified distances between trees (spacing). Both the stand age and the spacing between remaining trees are subject to the manager's choice. We define two thinning ages here. 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.
Download or read book Response of Sitka Spruce and Western Hemlock to Commercial Thinning written by Joseph N. Graham and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Yield of Western Hemlock in Oregon and Washington Following Both Initial Spacing of Young Stands and Later Thinning written by G. E. Hoyer and published by . This book was released on 1981 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PNW GTR written by and published by . This book was released on 2007 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FRDA Report written by and published by . This book was released on 1994 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Note Forest Engineering Research Institute of Canada written by and published by . This book was released on 1994 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: No. 1-13 are short-term studies; with no. 14 becomes a series of supplementary reports summarizing the results of longer-term data collection.
Download or read book Growth and Yield of Western Hemlock in the Pacific Northwest Following Thinning Near the Time of Initial Crown Closing written by Gerald E. Hoyer and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information for A Licences written by and published by . This book was released on 1989 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Yield of Western Hemlock in the Pacific Northwest Folllowing Thinning Near the Time of Initial Crown Closing written by G. E. Hoyer and published by . This book was released on 1986 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Yield of Western Hemlock in the Pacific Northwest Following Thinning Near the Time of Initial Crown Closing written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Test of Commercial Thinning on the Hemlock Experimental Forest written by Donald E. Hilt and published by . This book was released on 1977 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Issues in Global Timber Supplies written by James McLaren and published by Backbeat Books. This book was released on 1999 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yield of Even aged Stands of Western Hemlock written by George H. Barnes and published by . This book was released on 1962 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
