GSTDTAP  > 气候变化
DOI10.1088/1748-9326/aa5d23
Seasonal changes in the human alteration of fire regimes beyond the climate forcing
Frejaville, Thibaut1,2; Curt, Thomas1
2017-03-01
发表期刊ENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
出版年2017
卷号12期号:3
文章类型Article
语种英语
国家France
英文摘要

Human activities have altered fire regimes for millennia by suppressing or enhancing natural fire activity. However, whether these anthropogenic pressures on fire activity have exceeded and will surpass climate forcing still remains uncertain. We tested if, how and the extent to which seasonal fire activity in southern France has recently (1976-2009) deviated from climate-expected trends. The latter were simulated using an ensemble of detrended fire-climate models. We found both seasonal and regional contrasts in climatic effects through a mixture of drought-driven and fuel-limited fire regimes. Dry contemporary conditions chiefly drove fire frequency and burned area, although higher fire activity was related to wetter conditions in the last three years. Surprisingly, the relative importance of preceding wet conditions was higher in winter than in summer, illustrating the strong potential dependency of regional fire-climate relationships on the human use and control of fires. In the Mediterranean mountains, warm winters and springs favour extensive fires in the following dry summer. These results highlight that increasing dryness with climate change could have antagonistic effects on fire regime by leading to larger fires in summer (moisture-limited), but lower fire activity in winter (fuel-limited fire regime). Furthermore, fire trends have significantly diverged from climatic expectations, with a strong negative alteration in fire activity in the Mediterranean lowlands and the summer burned area in the mountains. In contrast, alteration of winter fire frequency in the Mediterranean and Temperate mountains has shifted from positive to negative (or null) trends during the mid1990 ' s, a period when fire suppression policy underwent major revisions. Our findings demonstrate that changes in land-use and fire suppression policy have probably exceeded the strength of climate change effects on changing fire regime in southern Europe, making regional predictions of future fires highly challenging.


英文关键词antecedent climate climate change fire policy land-use change Mediterranean mountain ecosystems pyroclimate
领域气候变化
收录类别SCI-E
WOS记录号WOS:000396025700001
WOS关键词WEATHER INDEX SYSTEM ; MEDITERRANEAN BASIN ; UNITED-STATES ; IBERIAN PENINSULA ; SOUTHERN FRANCE ; SIERRA-NEVADA ; PATTERNS ; WILDFIRE ; AREA ; VEGETATION
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
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/26105
专题气候变化
作者单位1.Irstea EMAX, Ecosyst Mediterraneens & Risques, Aix En Provence, France;
2.Univ Bordeaux, INRA, BIOGECO UMR 1202, Pessac, France
推荐引用方式
GB/T 7714
Frejaville, Thibaut,Curt, Thomas. Seasonal changes in the human alteration of fire regimes beyond the climate forcing[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(3).
APA Frejaville, Thibaut,&Curt, Thomas.(2017).Seasonal changes in the human alteration of fire regimes beyond the climate forcing.ENVIRONMENTAL RESEARCH LETTERS,12(3).
MLA Frejaville, Thibaut,et al."Seasonal changes in the human alteration of fire regimes beyond the climate forcing".ENVIRONMENTAL RESEARCH LETTERS 12.3(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Frejaville, Thibaut]的文章
[Curt, Thomas]的文章
百度学术
百度学术中相似的文章
[Frejaville, Thibaut]的文章
[Curt, Thomas]的文章
必应学术
必应学术中相似的文章
[Frejaville, Thibaut]的文章
[Curt, Thomas]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。