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Author : Anonim
Publisher : Unknown
Page : 164 pages
File Size : 53,6 Mb
Release : 2002
Category : Ecosystem management
ISBN : MINN:31951D02974812J
Author : Anonim
Publisher : Unknown
Page : 884 pages
File Size : 44,6 Mb
Release : 2006
Category : Electronic
ISBN : NWU:35556038328704
Author : Anonim
Publisher : Unknown
Page : 88 pages
File Size : 42,9 Mb
Release : 1993
Category : Forests and forestry
ISBN : IND:30000120299916
Author : Anonim
Publisher : Unknown
Page : 164 pages
File Size : 51,7 Mb
Release : 1978
Category : Forests and forestry
ISBN : UOM:39015057356332
Author : David Lawrence Peterson
Publisher : Unknown
Page : 42 pages
File Size : 46,9 Mb
Release : 2005
Category : Forest fires
ISBN : MINN:31951D02977031W
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.
Author : Anonim
Publisher : Unknown
Page : 754 pages
File Size : 42,9 Mb
Release : 2004
Category : Forests and forestry
ISBN : CORNELL:31924097798452
Author : Eric Knapp
Publisher : DIANE Publishing
Page : 85 pages
File Size : 48,5 Mb
Release : 2010-10
Category : Nature
ISBN : 9781437926156
Historical and prescribed fire regimes for different regions in the continental U.S. were compared and literature on season of prescribed burning synthesized. In regions and vegetation types where considerable differences in fuel consumption exist among burning seasons, the effects of prescribed fire season appears to be driven more by fire-intensity differences among seasons than by phenology or growth stage of organisms at the time of fire. Where fuel consumption differs little among burning seasons, the effect of phenology or growth stage of organisms is often more apparent, because it is not overwhelmed by fire-intensity differences. Species in ecosystems that evolved with fire appear to be resilient to one or few out-of-season prescribed burns. Illus.
Author : Anonim
Publisher : Unknown
Page : 790 pages
File Size : 51,6 Mb
Release : 2008
Category : Electronic
ISBN : NWU:35556038327995
Author : Anonim
Publisher : Unknown
Page : 92 pages
File Size : 41,9 Mb
Release : 2007
Category : Clearcutting
ISBN : MINN:31951D02974968O
Author : Anonim
Publisher : DIANE Publishing
Page : 90 pages
File Size : 49,9 Mb
Release : 2024-06-26
Category : Electronic
ISBN : 1422324729
Author : Anonim
Publisher : Unknown
Page : 92 pages
File Size : 46,8 Mb
Release : 2009
Category : Forest ecology
ISBN : MINN:31951D029382333
Author : Anonim
Publisher : Unknown
Page : 176 pages
File Size : 49,7 Mb
Release : 2007
Category : Douglas fir
ISBN : MINN:31951D02974976P
Silvicultural practices in the Douglas-fir region evolved through a combination of formal research, observation, and practical experience of forest managers and silviculturists, and changing economic and social factors. This process began more than a century ago and still continues. It has had a great influence on the economic well-being of the region and on the present characteristics of the regions forests. This long history is unknown to most of the public, and much of it is unfamiliar to many natural resource specialists outside (and even within) the field of silviculture. We trace the history of how we got where we are today and the contribution of silvicultural research to the evolution of forest practices. We give special attention to the large body of information developed in the first half of the past century that is becoming increasingly unfamiliar to both operational foresters andperhaps more importantlyto those engaged in forestry research. We also discuss some current trends in silviculture and silviculture-related research.
Author : Anonim
Publisher : Unknown
Page : 60 pages
File Size : 49,5 Mb
Release : 2009
Category : Post-fire forest management
ISBN : MINN:31951D02938266O
This synthesis provides an ecological foundation for management of the diverse ecosystems and fire regimes of North America, based on scientific principles of fire interactions with vegetation, fuels, and biophysical processes. Although a large amount of scientific data on fire exists, most of those data have been collected at small spatial and temporal scales. Thus, it is challenging to develop consistent science-based plans for large spatial and temporal scales where most fire management and planning occur. Understanding the regional geographic context of fire regimes is critical for developing appropriate and sustainable management strategies and policy. The degree to which human intervention has modified fire frequency, intensity, and severity varies greatly among different ecosystems, and must be considered when planning to alter fuel loads or implement restorative treatments. Detailed discussion of six ecosystems--ponderosa pine forest (western North America), chaparral (California), boreal forest (Alaska and Canada), Great Basin sagebrush (intermountain West), pine and pine-hardwood forests (Southern Appalachian Mountains), and longleaf pine (Southeastern United States)--illustrates the complexity of fire regimes and that fire management requires a clear regional focus that recognizes where conflicts might exist between fire hazard reduction and resource needs. In some systems, such as ponderosa pine, treatments are usually compatible with both fuel reduction and resource needs, whereas in others, such as chaparral, the potential exists for conflicts that need to be closely evaluated. Managing fire regimes in a changing climate and social environment requires a strong scientific basis for developing fire management and policy. --
Author : David L. Peterson
Publisher : DIANE Publishing
Page : 60 pages
File Size : 48,6 Mb
Release : 2010-11
Category : Technology & Engineering
ISBN : 9781437926668
Timber harvest following wildfire leads to different outcomes depending on the biophysical setting of the forest, pattern of burn severity, operational aspects of tree removal, and other activities. Postfire logging adds to these effects by removing standing dead trees (snags) and disturbing the soil. The influence of postfire logging depends on the intensity of the fire, intensity of the logging operation, and mgmt. activities such as fuel treatments. Removal of snags reduces long-term fuel loads but generally results in increased amounts of fine fuels for the first few years after logging. Cavity-nesting birds, small mammals, and amphibians may be affected by harvest of standing dead and live trees, with negative effects on most species. Illustrations.
Author : Anonim
Publisher : Unknown
Page : 466 pages
File Size : 53,9 Mb
Release : 1978
Category : Forests and forestry
ISBN : UCBK:C094345029
