Levels-of-Growing-Stock Cooperative Study in Douglas-Fir, Vol. 8
Author: Robert O. Curtis
Publisher: Forgotten Books
Published: 2018-09-10
Total Pages: 130
ISBN-13: 9781396091339
DOWNLOAD EBOOK →Excerpt from Levels-of-Growing-Stock Cooperative Study in Douglas-Fir, Vol. 8: The Logs Study: Twenty-Year Results This progress report reviews the history and status of the cooperative levels-oi-growing stock study in coast Douglas-fir, begun in 1961, in Oregon, Washington, and British Columbia. It presents new analyses, including comparisons among some installations. Data now available are primarily from the site II installations, which are approaching completion of the study. Growth is strongly related to growing stock. Thinning treatments have produced marked differences in volume distribution by tree sizes. During the fourth treatment period, current annual increment was still about double the mean annual increment, and differences in volumes and size distributions among treatments have been increasing rapidly. There are considerable differences in productivity among installations, beyond those accounted for by site index differences. The logs study design is evaluated. 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.
