Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2017.03.017 |
Trends and drivers of fire activity vary across California aridland ecosystems | |
Syphard, Alexandra D.1; Keeley, Jon E.2,3; Abatzoglou, John T.4 | |
通讯作者 | Syphard, Alexandra D. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2017 |
卷号 | 144页码:110-122 |
英文摘要 | Fire activity has increased in western US aridland ecosystems due to increased human-caused ignitions and the expansion of flammable exotic grasses. Because many desert plants are not adapted to fire, increased fire activity may have long-lasting ecological impacts on native vegetation and the wildlife that depend on it. Given the heterogeneity across aridland ecosystems, it is important to understand how trends and drivers of fire vary, so management can be customized accordingly. We examined historical trends and quantified the relative importance of and interactions among multiple drivers of fire patterns across five aridland ecoregions in southeastern California from 1970 to 2010. Fire frequency increased across all ecoregions for the first couple decades, and declined or plateaued since the 1990s; but area burned continued to increase in some regions. The relative importance of anthropogenic and biophysical drivers varied across ecoregions, with both direct and indirect influences on fire. Anthropogenic variables were equally important as biophysical variables, but some contributed indirectly, presumably via their influence on annual grass distribution and abundance. Grass burned disproportionately more than other cover types, suggesting that addressing exotics may be the key to fire management and conservation in much of the area. (C) 2017 Elsevier Ltd. All rights reserved. |
英文关键词 | Exotic grass Grass-fire cycle Land use Structural equation modeling Ecoregion |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000403999100012 |
WOS关键词 | MOJAVE DESERT ; CLIMATE-CHANGE ; UNITED-STATES ; NORTH-AMERICA ; USA ; INVASION ; WILDFIRE ; VEGETATION ; LANDSCAPE ; PATTERNS |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | United States Geological Survey ; University of California, Los Angeles |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200121 |
作者单位 | 1.Conservat Biol Inst, 10423 Sierra Vista Ave, La Mesa, CA 91941 USA; 2.US Geol Survey, Western Ecol Res Ctr, Sequoia Kings Canyon Field Stn, 47050 Gen Highway, Three Rivers, CA 93271 USA; 3.Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA; 4.Univ Idaho, Dept Geog, 875 Perimeter Dr,MS 3021, Moscow, ID 83844 USA |
推荐引用方式 GB/T 7714 | Syphard, Alexandra D.,Keeley, Jon E.,Abatzoglou, John T.. Trends and drivers of fire activity vary across California aridland ecosystems[J]. United States Geological Survey, University of California, Los Angeles,2017,144:110-122. |
APA | Syphard, Alexandra D.,Keeley, Jon E.,&Abatzoglou, John T..(2017).Trends and drivers of fire activity vary across California aridland ecosystems.JOURNAL OF ARID ENVIRONMENTS,144,110-122. |
MLA | Syphard, Alexandra D.,et al."Trends and drivers of fire activity vary across California aridland ecosystems".JOURNAL OF ARID ENVIRONMENTS 144(2017):110-122. |
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