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Author: Arthur P. Brackebusch Publisher: Forgotten Books ISBN: 9780265893296 Category : Languages : en Pages : 62
Book Description
Excerpt from Gain and Loss of Moisture in Large Forest Fuels Log moisture content did not provide a usable index of seasonal, monthly, or current fire danger severity. There are two main reasons for the failure' (1) fire danger, as now measured, is based upon the moisture content of fine fuels, which respond to weather much more rapidly than logs, and (2) two logs of approximately the same size had such different moisture contents at one time and from one time to another that the results from one were not comparable with the results from the other. Log moisture was found to decrease continuously, almost without regard to midsummer rain, from the last decade of June, which received approximately inch of rain, to the first decade after August 15 that received a similar amount. Rain falling between June 25 and August 15 had practically-no lasting effect upon log moisture content. Fire danger, in fuel types which include much pole and log-sized fuel, can be expected to increase greatly between July 10 and August 15 because of constant moisture losses. The present system of fire danger measurement makes no allowance for any intensification of the cumulative factor of danger during this period. The evidence indicates that the two main factors which determine how dry a log will become are its moisture content at the beginning of the summer desiccation period, and the length of the desiccation period. The log moisture at the beginning of the period will depend to a large extent on the amount of spring rain. It is therefore believed that a good index of the inflammability of large fuels during late season can be worked out on the basis of the amount of spring rain and the length of the summer desiccation period. A direct measure of log flammability can be obtained by measuring the average moisture content of the logs themselves, provided logs of the same size can be found which will have the same moisture content at any time and which will react the same from year to year. 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 P. Brackebusch Publisher: Forgotten Books ISBN: 9780265893296 Category : Languages : en Pages : 62
Book Description
Excerpt from Gain and Loss of Moisture in Large Forest Fuels Log moisture content did not provide a usable index of seasonal, monthly, or current fire danger severity. There are two main reasons for the failure' (1) fire danger, as now measured, is based upon the moisture content of fine fuels, which respond to weather much more rapidly than logs, and (2) two logs of approximately the same size had such different moisture contents at one time and from one time to another that the results from one were not comparable with the results from the other. Log moisture was found to decrease continuously, almost without regard to midsummer rain, from the last decade of June, which received approximately inch of rain, to the first decade after August 15 that received a similar amount. Rain falling between June 25 and August 15 had practically-no lasting effect upon log moisture content. Fire danger, in fuel types which include much pole and log-sized fuel, can be expected to increase greatly between July 10 and August 15 because of constant moisture losses. The present system of fire danger measurement makes no allowance for any intensification of the cumulative factor of danger during this period. The evidence indicates that the two main factors which determine how dry a log will become are its moisture content at the beginning of the summer desiccation period, and the length of the desiccation period. The log moisture at the beginning of the period will depend to a large extent on the amount of spring rain. It is therefore believed that a good index of the inflammability of large fuels during late season can be worked out on the basis of the amount of spring rain and the length of the summer desiccation period. A direct measure of log flammability can be obtained by measuring the average moisture content of the logs themselves, provided logs of the same size can be found which will have the same moisture content at any time and which will react the same from year to year. 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: Publisher: Elsevier ISBN: 0080471919 Category : Science Languages : en Pages : 383
Book Description
Advances in Ecological Research was first published in 1962 and has become one of Academic Press' most prestigious and successful series. In 1999 the Institute for Scientific Information released figures indicating this serial has an impact factor of 9.6 and a half-life of 10.0 years, ranking it first in the highly competitive category of Ecology. This volume continues to publish topical and important reviews, and interprets ecology to include all material that contributes to our understanding of the field. Advances in Ecological Research presents a wide range of papers on all aspects of ecology. Topics include the physiology, populations, and communities of plants and animals, as well as landscape and ecosystem ecology
Author: Michael G. Harrington Publisher: Forgotten Books ISBN: 9780666315809 Category : Technology & Engineering Languages : en Pages : 20
Book Description
Excerpt from Estimating Ponderosa Pine Fuel Moisture Using National Fire-Danger Rating Moisture Values The stand consisted basically of two distinct matu rity groups (fig. Open groups were dominated by large, old growth ponderosa pine with a sparse pine seedling understory. These groups averaged about 600 trees per acre with 206 square feet of basal area per acre. Surface fuels were exposed to many hours of direct sunlight and direct rainfall. Closed groups were characterized by dense, overstocked clumps of ponder osa pine saplings, often referred to as dog-hair thickets. The average density was trees per acre with a basal area of 186 square feet per acre. With the thick canopy cover, fuels were exposed to little sunlight, and rainfall was dispersed through the canopy. Because of the obvious group differences, sam pling was stratified by maturity group. 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: Hal E. Anderson Publisher: Forgotten Books ISBN: 9780428876784 Category : Business & Economics Languages : en Pages : 22
Book Description
Excerpt from Appraising Forest Fuels: A Concept Griswald, S. M. 1936. Effects of alternate moistening and drying on germination of western range plants. Bot. Gaz. -269. 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: Simard, A. J. (Albert J.) Publisher: canada : forest fire research institute ISBN: Category : Forest fire forecasting Languages : en Pages : 46
Author: G. W. Wendel Publisher: Forgotten Books ISBN: 9781528318242 Category : Technology & Engineering Languages : en Pages : 58
Book Description
Excerpt from Forest Fuels on Organic and Associated Soils in the Coastal Plain of North Carolina The fire problem in the organic soil (pocosin) areas of eastern North Carolina centers around the frequent and costly blowup_1/ wildfires occurring there and the use of fire as a management tool. Under certain combinations of fuel and weather, low intensity fires will suddenly and often unexpectedly multiply their rate of energy output many times. In almost all instances these fires have been virtually uncontrollable until the weather has moderated or the fire has run out of fuel. Efforts at control are often greatly hampered by inaccessibility and the poor soil trafficability in much of the area. Prescribed fire appears to be a potentially valuable tool in the manage ment of pond pine by promoting seed fall from the serotinous cones and in preparing the seedbed. Fires of sufficient intensity to achieve these results, however, are usually difficult to control and tend to burn deeply into the or ganie soil. The problem has become more acute in the past 10 years because of the increased commercial importance of the pocosins as pulpwood and timber producing areas. A better understanding of the behavior of fires in the pocosins, especially of the factors that favor the occurrence of major fires, could contribute much to the economy of this particular region as well as to the general fund of basic fire behavior knowledge. 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 P. Brackebusch
Author: Arthur P. Brackebusch
Author: Arthur P. Brackebusch
Author: 
Author: Joseph Wilden Gorrell
Author: Michael A. Fosberg
Author: Forest Fire Research Institute (Canada)
Author: Michael G. Harrington
Author: Hal E. Anderson
Author: Simard, A. J. (Albert J.)
Author: G. W. Wendel