Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/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
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ISSN | 1748-9326 |
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). |
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