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DOI	10.1016/j.jaridenv.2020.104414
	Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands
	Pan, Ning; Wang, Shuai; Liu, Yanxu; Li, Yan; Xue, Feng; Wei, Fangli; Yu, Haipeng; Fu, Bojie
通讯作者	Wang, S (通讯作者)，Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, 19 XinJieKouWai St, Beijing 100875, Peoples R China.
发表日期	2021
ISSN	0140-1963
EISSN	1095-922X
卷号	186
英文摘要	Drylands are of great significance on terrestrial ecosystems and economic development, while being sensitive to climate changes and human activities. How global drylands extent and climate changed is not clear, and the dominant factor is the dispute over enhanced air evaporative demand and insufficient precipitation. This study attempted to fill this gap by exploring the trends in dryland areas, aridity index (AI), precipitation (P), and potential evapotranspiration (PET), and quantifying the temporal contributions of P and PET to AI. The results showed that the total dryland area shrunk 0.71 x 10(6) km(2) during 1901-2017 with reversed trend of shrinking to expanding. Precipitation dominates aridity in 88% of drylands, except for some regions in Europe and East Asia. With global warming, the relative contribution of PET to aridity in drylands increased significantly with a rate of 0.07% per year. The effect of PET exceeded that of P in 1966, which was the reason for the trend reversals of average AI.
关键词	CLIMATE-CHANGE DROUGHT TRENDS COVER ENSO ANOMALIES EVOLUTION EXPANSION NORTHWEST PATTERNS
英文关键词	Aridity index; Dryland; Climate reversal; Temporal contribution; Potential evapotranspiration
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:000611829200003
来源期刊	JOURNAL OF ARID ENVIRONMENTS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254596
作者单位	[Pan, Ning; Wang, Shuai; Liu, Yanxu; Li, Yan; Xue, Feng; Fu, Bojie] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, 19 XinJieKouWai St, Beijing 100875, Peoples R China; [Wei, Fangli; Fu, Bojie] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China; [Yu, Haipeng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Pan, Ning,Wang, Shuai,Liu, Yanxu,et al. Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands[J]. 中国科学院西北生态环境资源研究院,2021,186.
APA	Pan, Ning.,Wang, Shuai.,Liu, Yanxu.,Li, Yan.,Xue, Feng.,...&Fu, Bojie.(2021).Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands.JOURNAL OF ARID ENVIRONMENTS,186.
MLA	Pan, Ning,et al."Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands".JOURNAL OF ARID ENVIRONMENTS 186(2021).