Woody Fuel And Duff Consumption By Prescribed Fire In Northern Idaho Mixed Conifer Logging Slash

Author : Anonim
Publisher : Unknown
Page : 28 pages
File Size : 48,8 Mb
Release : 1991
Category : Fuelwood
ISBN : UVA:X001950500

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Woody Fuel and Duff Consumption by Prescribed Fire in Northern Idaho Mixed Conifer Logging Slash by Anonim Pdf

Experimental burns were conducted on 36 plots in mixed conifer logging slash in northern Idaho to investigate consumption of duff and woody fuel. Prescribed fires were conducted in spring and fall, in YUM (yarded unmerchantable material) and non-YUM clearcuts and seedtree cuts. Preburn and postburn fuel loadings were measured, and fuel moistures were sampled shortly before burning. Preburn duff depth ranged from 1.2 to 2.6 inches. Preburn woody fuel loadings ranged from 28 to 86 tons/acre. Sixty-four percent of the duff was consumed. Most of the small woody fuel was consumed, along with an average of 15.5 tons/acre of large woody fuel. Postburn mineral soil exposure averaged 66 percent. Residual loading of large woody fuel averaged 31 tons/acre. Methods for predicting duff and woody fuel consumption are reported. For predicting percentage of duff reduced, the best independent variables were shallow duff moisture content and unit average diameter reduction of large woody material. For predicting duff depth reduction, the best independent variables were average duff moisture content and preburn duff depth. Diameter reduction of large woody fuel was best predicted using moisture content and average preburn diameter as independent variables. Guidelines are included for fire prescription development. These include recommendations for amounts of fuel to retain and to consume and discussion of tradeoffs in setting fire objectives. Equations are presented for computing moisture contents.

Author : Elizabeth D. Reinhardt
Publisher : Forgotten Books
Page : 36 pages
File Size : 41,5 Mb
Release : 2017-11-18
Category : Technology & Engineering
ISBN : 0260953849

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Woody Fuel and Duff Consumption by Prescribed Fire in Northern Idaho Mixed Conifer Logging Slash (Classic Reprint) by Elizabeth D. Reinhardt Pdf

Excerpt from Woody Fuel and Duff Consumption by Prescribed Fire in Northern Idaho Mixed Conifer Logging Slash Because of these considerations, managers at tempt to remove specified amounts of fuel and also retain desired amounts of residual organic material. Consumption of fuels and retention of organic material can be described in several ways. Duff consumption is often described as depth reduction, percentage depth reduction, and percentage mineral soil exposure. For evaluating smoke emissions and nutrient capital, depth reduction is the appropriate expression because it describes actual amounts and can be converted to weight if duff bulk density is known. Percentage duff reduction is commonly used to describe fire prescription targets. It must be applied to preburn depth or loading to estimate actual amounts of duff removed or retained. Per centage mineral soil exposure relates to regenera tion potential, seedbed quality, and vulnerability to erosion. Objectives and constraints of prescribed fire can often be expressed as desired or acceptable levels of percentage mineral soil exposure. Consumption of woody fuel is often described as percentage of preburn fuel quantities consumed, especially for evaluating prescribed fire effects and designing fire prescriptions. It may be pre dicted initially as average diameter reduction of woody pieces and then converted to percentage volume reduction or fuel loading reduction. 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 : Anonim
Publisher : Unknown
Page : 28 pages
File Size : 42,9 Mb
Release : 1991
Category : Fuelwood
ISBN : MINN:31951D02988197N

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Woody Fuel and Duff Consumption by Prescribed Fire in Northern Idaho Mixed Conifer Logging Slash by Anonim Pdf

Experimental burns were conducted on 36 plots in mixed conifer logging slash in northern Idaho to investigate consumption of duff and woody fuel. Prescribed fires were conducted in spring and fall, in YUM (yarded unmerchantable material) and non-YUM clearcuts and seedtree cuts. Preburn and postburn fuel loadings were measured, and fuel moistures were sampled shortly before burning. Preburn duff depth ranged from 1.2 to 2.6 inches. Preburn woody fuel loadings ranged from 28 to 86 tons/acre. Sixty-four percent of the duff was consumed. Most of the small woody fuel was consumed, along with an average of 15.5 tons/acre of large woody fuel. Postburn mineral soil exposure averaged 66 percent. Residual loading of large woody fuel averaged 31 tons/acre. Methods for predicting duff and woody fuel consumption are reported. For predicting percentage of duff reduced, the best independent variables were shallow duff moisture content and unit average diameter reduction of large woody material. For predicting duff depth reduction, the best independent variables were average duff moisture content and preburn duff depth. Diameter reduction of large woody fuel was best predicted using moisture content and average preburn diameter as independent variables. Guidelines are included for fire prescription development. These include recommendations for amounts of fuel to retain and to consume and discussion of tradeoffs in setting fire objectives. Equations are presented for computing moisture contents.

Author : Bret W. Tobalske,Dean E. Medin,Richard C. Rothermel,Ward W. McCaughey
Publisher : Unknown
Page : 162 pages
File Size : 45,5 Mb
Release : 1991
Category : Beavers
ISBN : OSU:32435055896401

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Montana's Log Home Industry by Bret W. Tobalske,Dean E. Medin,Richard C. Rothermel,Ward W. McCaughey Pdf

Author : Anonim
Publisher : Unknown
Page : 334 pages
File Size : 51,9 Mb
Release : 1990
Category : Forests and forestry
ISBN : UOM:39015022539491

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Research Paper INT. by Anonim Pdf

Author : Dean E. Medin
Publisher : Unknown
Page : 714 pages
File Size : 48,6 Mb
Release : 1989
Category : Grazing
ISBN : STANFORD:36105110631681

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Small Mammal Populations in a Grazed and Ungrazed Riparian Habitat in Nevada by Dean E. Medin Pdf

Author : Society for Ecological Restoration. Conference
Publisher : Unknown
Page : 804 pages
File Size : 42,7 Mb
Release : 1996
Category : Fire ecology
ISBN : STANFORD:36105112083931

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The Use of Fire in Forest Restoration by Society for Ecological Restoration. Conference Pdf

Author : Elizabeth D. Reinhardt
Publisher : Unknown
Page : 106 pages
File Size : 43,5 Mb
Release : 1997
Category : Forests and forestry
ISBN : OSU:32435055991228

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First Order Fire Effects Model by Elizabeth D. Reinhardt Pdf

Author : Jane Kapler Smith
Publisher : Unknown
Page : 148 pages
File Size : 40,7 Mb
Release : 1997
Category : Fire ecology
ISBN : MINN:31951D03009598V

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Fire Ecology of the Forest Habitat Types of Northern Idaho by Jane Kapler Smith Pdf

Provides information on fire ecology in forest habitat and community types occurring in northern Idaho. Identifies fire groups based on presettlement fire regimes and patterns of succession and stand development after fire. Describes forest fuels and suggests considerations for fire management.

Author : Anonim
Publisher : Unknown
Page : 72 pages
File Size : 48,9 Mb
Release : 1981
Category : Forests and forestry
ISBN : UCR:31210020137459

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General Technical Report INT. by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 256 pages
File Size : 53,6 Mb
Release : 1985
Category : Forests and forestry
ISBN : CUB:U183029135474

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Recent Reports by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 468 pages
File Size : 43,9 Mb
Release : 1999
Category : Electronic
ISBN : NWU:35556030822662

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Colville National Forest/ Idaho Panhandle National Forest (N.F), Douglas Fir Beetle Project by Anonim Pdf

Author : Sharon M. Hood
Publisher : DIANE Publishing
Page : 80 pages
File Size : 52,5 Mb
Release : 2011
Category : Nature
ISBN : 9781437939033

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Mitigating Old Tree Mortality in Long-Unburned, Fire-Dependent Forests by Sharon M. Hood Pdf

This is a print on demand edition of a hard to find publication. This report synthesizes the literature and current state of knowledge pertaining to re-introducing fire in stands where it has been excluded for long periods and the impact of these introductory fires on overstory tree injury and mortality. Only forested ecosystems in the United States that are adapted to survive frequent fire are included. Treatment options that minimize large-diameter and old tree injury and mortality in areas with deep duff and methods to manage and reduce duff accumulations are discussed. Pertinent background information on tree physiology, properties of duff, and historical versus current disturbance regimes are also discussed. Charts and tables.

Author : Stephen V. Cooper
Publisher : Unknown
Page : 368 pages
File Size : 40,9 Mb
Release : 1997
Category : Botany
ISBN : STANFORD:36105112083949

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Plant Community Classification for Alpine Vegetation on the Beaverhead National Forest, Montana by Stephen V. Cooper Pdf

Author : Mark A. Finney,Sara S. McAllister,Jason M. Forthofer,Torben P. Grumstrup
Publisher : CSIRO PUBLISHING
Page : 675 pages
File Size : 54,6 Mb
Release : 2021-11-01
Category : Nature
ISBN : 9781486309108

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Wildland Fire Behaviour by Mark A. Finney,Sara S. McAllister,Jason M. Forthofer,Torben P. Grumstrup Pdf

Wildland fires have an irreplaceable role in sustaining many of our forests, shrublands and grasslands. They can be used as controlled burns or occur as free-burning wildfires, and can sometimes be dangerous and destructive to fauna, human communities and natural resources. Through scientific understanding of their behaviour, we can develop the tools to reliably use and manage fires across landscapes in ways that are compatible with the constraints of modern society while benefiting the ecosystems. The science of wildland fire is incomplete, however. Even the simplest fire behaviours – how fast they spread, how long they burn and how large they get – arise from a dynamical system of physical processes interacting in unexplored ways with heterogeneous biological, ecological and meteorological factors across many scales of time and space. The physics of heat transfer, combustion and ignition, for example, operate in all fires at millimetre and millisecond scales but wildfires can become conflagrations that burn for months and exceed millions of hectares. Wildland Fire Behaviour: Dynamics, Principles and Processes examines what is known and unknown about wildfire behaviours. The authors introduce fire as a dynamical system along with traditional steady-state concepts. They then break down the system into its primary physical components, describe how they depend upon environmental factors, and explore system dynamics by constructing and exercising a nonlinear model. The limits of modelling and knowledge are discussed throughout but emphasised by review of large fire behaviours. Advancing knowledge of fire behaviours will require a multidisciplinary approach and rely on quality measurements from experimental research, as covered in the final chapters.