A Test of Commercial Thinning on the Hemlock Experimental Forest
Author | : Donald E. Hilt |
Publisher | : |
Total Pages | : 20 |
Release | : 1977 |
Genre | : Forest thinning |
ISBN | : |
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Author | : Donald E. Hilt |
Publisher | : |
Total Pages | : 20 |
Release | : 1977 |
Genre | : Forest thinning |
ISBN | : |
Author | : Donald E. Hilt |
Publisher | : |
Total Pages | : 0 |
Release | : 1977 |
Genre | : Western hemlock |
ISBN | : |
Author | : Joseph N. Graham |
Publisher | : |
Total Pages | : 24 |
Release | : 1985 |
Genre | : Forest thinning |
ISBN | : |
Author | : Edward J. Dimock |
Publisher | : |
Total Pages | : 24 |
Release | : 1963 |
Genre | : Demonstration forests |
ISBN | : |
Author | : Donald E. Hilt |
Publisher | : |
Total Pages | : 112 |
Release | : 1975 |
Genre | : Forest thinning |
ISBN | : |
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.
Author | : Norman P. Worthington |
Publisher | : Forgotten Books |
Total Pages | : 20 |
Release | : 2018-09-27 |
Genre | : Business & Economics |
ISBN | : 9781396455940 |
Excerpt from Labor Requirements in Thinning Douglas-Fir and Western Hemlock on Two Experimental Forests in Western Washington The Pacific Northwest Forest and Range Experiment Station has been engaged in research over the past 20 years to discover some of the silvicultural and economic factors which would influence thinning practice. We have accumulated a series of time and production records from several studies of thinning methods. 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.
Author | : Arthur R. Tiedemann |
Publisher | : |
Total Pages | : 730 |
Release | : 1977 |
Genre | : Abies concolor |
ISBN | : |
Author | : Norman P. Worthington |
Publisher | : |
Total Pages | : 0 |
Release | : 1966 |
Genre | : Douglas fir |
ISBN | : |