Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14735 |
Wildfire refugia in forests: Severe fire weather and drought mute the influence of topography and fuel age | |
Collins, Luke1,2,3; Bennett, Andrew F.1,2,3; Leonard, Steve W. J.1,3,4; Penman, Trent D.5 | |
2019-07-19 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:11页码:3829-3843 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Wildfire refugia (unburnt patches within large wildfires) are important for the persistence of fire-sensitive species across forested landscapes globally. A key challenge is to identify the factors that determine the distribution of fire refugia across space and time. In particular, determining the relative influence of climatic and landscape factors is important in order to understand likely changes in the distribution of wildfire refugia under future climates. Here, we examine the relative effect of weather (i.e. fire weather, drought severity) and landscape features (i.e. topography, fuel age, vegetation type) on the occurrence of fire refugia across 26 large wildfires in south-eastern Australia. Fire weather and drought severity were the primary drivers of the occurrence of fire refugia, moderating the effect of landscape attributes. Unburnt patches rarely occurred under 'severe' fire weather, irrespective of drought severity, topography, fuels or vegetation community. The influence of drought severity and landscape factors played out most strongly under 'moderate' fire weather. In mesic forests, fire refugia were linked to variables that affect fuel moisture, whereby the occurrence of unburnt patches decreased with increasing drought conditions and were associated with more mesic topographic locations (i.e. gullies, pole-facing aspects) and vegetation communities (i.e. closed-forest). In dry forest, the occurrence of refugia was responsive to fuel age, being associated with recently burnt areas (<5 years since fire). Overall, these results show that increased severity of fire weather and increased drought conditions, both predicted under future climate scenarios, are likely to lead to a reduction of wildfire refugia across forests of southern Australia. Protection of topographic areas able to provide long-term fire refugia will be an important step towards maintaining the ecological integrity of forests under future climate change. |
英文关键词 | drought eucalypt forests fire refuge fire weather temperate forest wildfire |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000478222600001 |
WOS关键词 | EUCALYPT FORESTS ; PRONE LANDSCAPES ; CLIMATE-CHANGE ; SYDNEY REGION ; BURN SEVERITY ; LEAF-AREA ; VEGETATION ; WATER ; AUSTRALIA ; DYNAMICS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185180 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.La Trobe Univ, Dept Ecol Environm & Evolut, Bundoora, Vic 3086, Australia; 2.Arthur Rylah Inst Environm Res, Dept Environm Land Water & Planning, Heidelberg, Vic, Australia; 3.La Trobe Univ, Res Ctr Future Landscapes, Bundoora, Vic, Australia; 4.Nat Values Conservat Branch, Dept Primary Ind Pk Water & Environm, Hobart, Tas, Australia; 5.Univ Melbourne, Sch Ecosyst & Forest Sci, Creswick, Vic, Australia |
推荐引用方式 GB/T 7714 | Collins, Luke,Bennett, Andrew F.,Leonard, Steve W. J.,et al. Wildfire refugia in forests: Severe fire weather and drought mute the influence of topography and fuel age[J]. GLOBAL CHANGE BIOLOGY,2019,25(11):3829-3843. |
APA | Collins, Luke,Bennett, Andrew F.,Leonard, Steve W. J.,&Penman, Trent D..(2019).Wildfire refugia in forests: Severe fire weather and drought mute the influence of topography and fuel age.GLOBAL CHANGE BIOLOGY,25(11),3829-3843. |
MLA | Collins, Luke,et al."Wildfire refugia in forests: Severe fire weather and drought mute the influence of topography and fuel age".GLOBAL CHANGE BIOLOGY 25.11(2019):3829-3843. |
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