干旱区生态环境知识资源中心(Arid): Spatiotemporal Evolution of Evapotranspiration in China after 1998

Arid

DOI	10.3390/w12113250
	Spatiotemporal Evolution of Evapotranspiration in China after 1998
	Guo, Qi; Liang, Jiening; Cao, Xianjie; Zhang, Zhida; Zhang, Lei
通讯作者	Zhang, L
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:11
英文摘要	Changes in water circulation and uneven distributions of water resources caused by global warming are prominent problems facing the world at present. It is important to understand the influencing factors, and evapotranspiration (ET) is a key parameter for measuring the water cycle. However, understanding of spatiotemporal changes in actual evapotranspiration and its mechanism is still limited by a lack of long-term and large-scale in situ datasets. Here, the evolution of evapotranspiration in typical East Asian monsoon areas in China from 1989 to 2005 was analyzed with global land ET synthesis products. Evapotranspiration in China showed evident interdecadal variations around 1998; it decreased before 1998 and subsequently increased, which is inversely related to global ET changes. We further divided China into water-control and energy-control regions to discuss the factors influencing ET changes in each region. The interdecadal variations in increasing ET after 1998 in China were dominated by increasing potential evaporation in the energy-control region. An analysis using the empirical orthogonal function (EOF) method found that this occurred because ET is mainly manifested as decadal changes controlled by climate warming in the energy-control region and as interannual variations in the water-control region. The different feedbacks of ET on climate change in the two regions were also reflected in the difference in energy partition. The change in the Bowen rate (BR) did not increase climatic differences between energy- and water-control zones, but increases in the BR in arid summers significantly affected local weather and climate.
英文关键词	evapotranspiration potential evaporation water balance EOF energy distribution
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000594707500001
WOS关键词	PAN EVAPORATION TRENDS ; CLIMATE-CHANGE ; WATER ; LAND ; SENSITIVITY ; VARIABLES ; MOISTURE ; REGIONS ; PATTERN ; DEMAND
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327795
作者单位	[Guo, Qi; Liang, Jiening; Cao, Xianjie; Zhang, Zhida; Zhang, Lei] Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Changes, Minist Educ, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Guo, Qi,Liang, Jiening,Cao, Xianjie,et al. Spatiotemporal Evolution of Evapotranspiration in China after 1998[J]. 兰州大学,2020,12(11).
APA	Guo, Qi,Liang, Jiening,Cao, Xianjie,Zhang, Zhida,&Zhang, Lei.(2020).Spatiotemporal Evolution of Evapotranspiration in China after 1998.WATER,12(11).
MLA	Guo, Qi,et al."Spatiotemporal Evolution of Evapotranspiration in China after 1998".WATER 12.11(2020).