Dennis M. Cole
Published: 2018-01-09
Total Pages: 20
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Excerpt from Site Treatments Influence Development of a Young-Mixed Species Western Larch Stand Polk and Boe (1951) and Roe (1955) concluded that desired composition of the future stand can neither be attained nor maintained through cutting method alone; seedbed preparation and later stand improvement prae tices are necessary. Specifically, practices are required that obtain establishment of desired tree species before shrubs and other vegetation overwhelm the site. Roe (1955) studied the relative need for sunlight and minera soil seedbeds of larch and its common associates in the western larch type at Terrace Hill on the Coram Experimental Forest in northwestern Montana. He described the relationships among method of cutting, proportion of ground surface in favorable seedbed, and resultant stocking percentages of each species. Schmidt (1969) later reported on seedling and early sapling development and concluded that site preparation - in the form of mechanical scarification, prescribed burning, and slashing of competing shrubs influenced not only regeneration establishment, but sub sequent seedling development. He found, after 12 to 15 years, that larch regenerated abundantly, grew rapidly, and became dominant where prescribed burnin or mechanical scarification provided a sufficient area of ash or mineral soil seedbeds and reduced the amount of competing vegetation. Spruce seedlings also required mineral soil for successful establishment but grew slow] on the exposed seedbeds favored by larch. In contrast. Douglas-fir was insensitive to seedbed condition in the regeneration phase, but tended to dominate the stands where seedbeds had little or no preparation and larch competition was light. 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.
