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DOI: 10.1371/journal.pone.0099699
Title:
Fire Activity and Severity in the Western US Vary along Proxy Gradients Representing Fuel Amount and Fuel Moisture
Author: Sean A. Parks; Marc-André Parisien; Carol Miller; Solomon Z. Dobrowski
Source Publication: PLOS ONE
ISSN: 1932-6203
Indexed By: SCI-E
Publishing Year: 2014
Date Published: 2014-6-18
Volume: 9, Issue:6
Language: 英语
Keyword: Fuels ; Wildfires ; Ecosystems ; Fire suppression technology ; Deserts ; Wilderness ; Fire research ; Climate change
Subject in Chinese: 蒸散 ; 沙漠 ; 山火
Subject: EVAPOTRANSPIRATION ; DESERTS ; WILDFIRES
English Abstract: Numerous theoretical and empirical studies have shown that wildfire activity (e.g., area burned) at regional to global scales may be limited at the extremes of environmental gradients such as productivity or moisture. Fire activity, however, represents only one component of the fire regime, and no studies to date have characterized fire severity along such gradients. Given the importance of fire severity in dictating ecological response to fire, this is a considerable knowledge gap. For the western US, we quantify relationships between climate and the fire regime by empirically describing both fire activity and severity along two climatic water balance gradients, actual evapotranspiration (AET) and water deficit (WD), that can be considered proxies for fuel amount and fuel moisture, respectively. We also concurrently summarize fire activity and severity among ecoregions, providing an empirically based description of the geographic distribution of fire regimes. Our results show that fire activity in the western US increases with fuel amount (represented by AET) but has a unimodal (i.e., humped) relationship with fuel moisture (represented by WD); fire severity increases with fuel amount and fuel moisture. The explicit links between fire regime components and physical environmental gradients suggest that multivariable statistical models can be generated to produce an empirically based fire regime map for the western US. Such models will potentially enable researchers to anticipate climate-mediated changes in fire recurrence and its impacts based on gridded spatial data representing future climate scenarios.
Related Link: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0099699&type=printable
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Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/19852
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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Affiliation: Aldo Leopold Wilderness Research Institute, Rocky Mountain Research Station, USDA Forest Service, Missoula, Montana, United States of America;Northern Forestry Centre, Canadian Forest Service, Natural Resources Canada, Edmonton, Alberta, Canada;Aldo Leopold Wilderness Research Institute, Rocky Mountain Research Station, USDA Forest Service, Missoula, Montana, United States of America;Department of Forest Management, College of Forestry and Conservation, University of Montana, Missoula, Montana, United States of America

Recommended Citation:
Sean A. Parks,Marc-André Parisien,Carol Miller,et al. Fire Activity and Severity in the Western US Vary along Proxy Gradients Representing Fuel Amount and Fuel Moisture[J]. PLOS ONE,2014-01-01,9(6)
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