[PDF] Old Growth Ponderosa Pine And Western Larch Stand Structures Influences Of Pre 1900 Fires And Fire Exclusion eBook

Author : Stephen F. Arno
Publisher : Forgotten Books
Page : 32 pages
File Size : 23,56 MB
Release : 2018-09-09
Category : Business & Economics
ISBN : 9781390477153

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Excerpt from Old Growth Ponderosa Pine and Western Larch Stand Structures: Influences of Pre-1900 Fires and Fire Exclusion Figure 1 - General location of the 11 old growth study sites in western Montana. The stars indicate the two new study sites Lolo-4 (l-4) and Lolo-5 (l-5) while an X indicates one of the nine previously reported sites identified by the symbols B (bitterroot National Forest), F (flathead National Forest), or L (lolo National Forest). Table 1 - Summary of fire history and site characteristics of the 1 1 old growth stands representing eight different sites in western Montana, arranged according to increasing site moisture conditions. Samples Lolo-4 and Lolo-5 have not been previously reported. 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 : David Lawrence Peterson
Publisher :
Page : 42 pages
File Size : 46,69 MB
Release : 2005
Category : Forest fires
ISBN :

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Fire, in conjunction with landforms and climate, shapes the structure and function of forests throughout the Western United States, where millions of acres of forest lands contain accumulations of flammable fuel that are much higher than historical conditions owing to various forms of fire exclusion. The Healthy Forests Restoration Act mandates that public land managers assertively address this situation through active management of fuel and vegetation. This document synthesizes the relevant scientific knowledge that can assist fuel-treatment projects on national forests and other public lands and contribute to National Environmental Policy Act (NEPA) analyses and other assessments. It is intended to support science-based decisionmaking for fuel management in dry forests of the Western United States at the scale of forest stands (about 1 to 200 acres). It highlights ecological principles that need to be considered when managing forest fuel and vegetation for specific conditions related to forest structure and fire hazard. It also provides quantitative and qualitative guidelines for planning and implementing fuel treatments through various silvicultural prescriptions and surfacefuel treatments. Effective fuel treatments in forest stands with high fuel accumulations will typically require thinning to increase canopy base height, reduce canopy bulk density, reduce canopy continuity, and require a substantial reduction in surface fuel through prescribed fire or mechanical treatment or both. Long-term maintenance of desired fuel loadings and consideration of broader landscape patterns may improve the effectiveness of fuel treatments.