干旱区生态环境知识资源中心(Arid): Observational evidence of wildfire-promoting soil moisture anomalies

Arid

DOI	10.1038/s41598-020-67530-4
	Observational evidence of wildfire-promoting soil moisture anomalies
	Sungmin, O.; Hou, Xinyuan; Orth, Rene
通讯作者	Sungmin, O
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2020
卷号	10 期号:1
英文摘要	Wildfires can destroy property and vegetation, thereby threatening people's livelihoods and food security. Soil moisture and biomass are important determinants of wildfire hazard. Corresponding novel satellite-based observations therefore present an opportunity to better understand these disasters globally and across different climate regions. We sampled 9,840 large wildfire events from around the globe, between 2001 and 2018, along with respective surface soil moisture and biomass data. Using composites across fire events in similar climate regions, we show contrasting soil moisture anomalies in space and time preceding large wildfires. In arid regions, wetter-than-average soils facilitate sufficient biomass growth required to fuel large fires. In contrast, in humid regions, fires are typically preceded by dry soil moisture anomalies, which create suitable ignition conditions and flammability in an otherwise too wet environment. In both regions, soil moisture anomalies continuously decrease in the months prior to fire occurrence, often from above-normal to belownormal. These signals are most pronounced in sparsely populated areas with low human influence, and for larger fires. Resolving natural soil moisture-fire interactions supports fire modelling and facilitates improved fire predictions and early warning.
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000546538300006
WOS关键词	LIVE FUEL MOISTURE ; CLIMATE-CHANGE ; FIRE ACTIVITY ; BURNED AREA ; DROUGHT ; FOREST ; EMISSIONS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324963
作者单位	[Sungmin, O.; Hou, Xinyuan; Orth, Rene] Max Planck Inst Biogeochem, Dept Biogeochem Integrat, D-07745 Jena, Germany
推荐引用方式 GB/T 7714	Sungmin, O.,Hou, Xinyuan,Orth, Rene. Observational evidence of wildfire-promoting soil moisture anomalies[J],2020,10(1).
APA	Sungmin, O.,Hou, Xinyuan,&Orth, Rene.(2020).Observational evidence of wildfire-promoting soil moisture anomalies.SCIENTIFIC REPORTS,10(1).
MLA	Sungmin, O.,et al."Observational evidence of wildfire-promoting soil moisture anomalies".SCIENTIFIC REPORTS 10.1(2020).