Excerpt from Thinning Ponderosa Pine in the Pacific Northwest: A Summary of Present Information Protection during the past fifty years has prevented the destruo tion of these young trees by fire and they have developed into seedling, sapling, or pole stands. Occurrence, size and density of these young stands vary widely, depending on the site and particular history of each spot and on the amount of overwood. 'where the mature stand was very dense, few pine seedlings have survived, But where the stand was more open as a result of fires, bark beetles or other causes, reproduction has often grown into dense patches of saplings or poles. In many places the young growth has now been fully released by logging of the overstory trees; elsewhere it is still held back by the remaining overstory. 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.