干旱区生态环境知识资源中心(Arid): An overall consistent increase of global aridity in 1970-2018

Arid

DOI	10.1007/s11442-023-2091-0
	An overall consistent increase of global aridity in 1970-2018
	Luo, Dengnan; Hu, Zhongmin; Dai, Licong; Hou, Guolong; Di, Kai; Liang, Minqi; Cao, Ruochen; Zeng, Xiang
通讯作者	Hu, ZM
来源期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN	1009-637X
EISSN	1861-9568
出版年	2023
卷号	33 期号:3 页码:449-463
英文摘要	Climate change is expected to introduce more water demand in the face of diminishing water supplies, intensifying the degree of aridity observed in terrestrial ecosystems in the 21st century. This study investigated spatiotemporal variability within global aridity index (AI) values from 1970-2018. The results revealed an overall drying trend (0.0016 yr(-1), p<0.01), with humid and semi-humid regions experiencing more significant drying than other regions, including those classified as arid or semi-arid. In addition, the Qinghai-Tibet Plateau has gotten wetter, largely due to the increases in precipitation (PPT) observed in that region. Global drying is driven primarily by decreasing and increasing PPT and potential evapotranspiration (PET), respectively. Decreases in PPT alone or increases in PET also drive global aridification, though to a lesser extent. PPT and increasing potential evapotranspiration (PET), with increasing PET alone or decreasing PPT alone. Slightly less than half of the world's land area has exhibited a wetting trend, largely owing to increases in regional PPT. In some parts of the world, the combined effects of increased PPT and decreased PET drives wetting, with decreases in PET alone explaining wetting in others. These results indicate that, without consideration of other factors (e.g., CO2 fertilization), aridity may continue to intensify, especially in humid regions.
英文关键词	aridity index climate change arid area drying trend
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000948349900002
WOS关键词	INDIAN-OCEAN DIPOLE ; CLIMATE-CHANGE ; DROUGHT ; INDEX ; TRENDS ; OSCILLATION ; IMPACTS ; REGION ; SCALE ; MODE
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397338
推荐引用方式 GB/T 7714	Luo, Dengnan,Hu, Zhongmin,Dai, Licong,et al. An overall consistent increase of global aridity in 1970-2018[J],2023,33(3):449-463.
APA	Luo, Dengnan.,Hu, Zhongmin.,Dai, Licong.,Hou, Guolong.,Di, Kai.,...&Zeng, Xiang.(2023).An overall consistent increase of global aridity in 1970-2018.JOURNAL OF GEOGRAPHICAL SCIENCES,33(3),449-463.
MLA	Luo, Dengnan,et al."An overall consistent increase of global aridity in 1970-2018".JOURNAL OF GEOGRAPHICAL SCIENCES 33.3(2023):449-463.