干旱区生态环境知识资源中心(Arid): Spatiotemporal Changes in Evapotranspiration from an Overexploited Water Resources Basin in Arid Northern China and Their Implications for Ecosystem Management

Arid

DOI	10.3390/su11020445
	Spatiotemporal Changes in Evapotranspiration from an Overexploited Water Resources Basin in Arid Northern China and Their Implications for Ecosystem Management
	Liu, Jianfu 1; Xiong, Yujiu 2,3; Tian, Jianlin 4,5; Tan, Zhihang 5
通讯作者	Xiong, Yujiu
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2019
卷号	11 期号:2
英文摘要	Evapotranspiration (ET), including evaporation from soil and water surfaces and transpiration from vegetation, influences water distribution in the soil-plant-atmosphere continuum, especially in arid areas where water is a key limiting factor. Therefore, understanding the spatiotemporal dynamics of ET, including its two components of soil evaporation (Es) and vegetation transpiration (Ec), can be useful for water resource management and ecological restoration in arid regions. Based on ET data from 2002 to 2012, the spatiotemporal variations in ET were evaluated in the Shiyang River Basin in arid Northwest China. The results showed the following: (1) spatially, ET decreased from upstream of the Qilian Mountains to the middle and downstream, with a mean annual value of 316 mm; (2) temporally, ET showed a single peak curve throughout the year, with the highest value occurring in summer; (3) ET showed a downward trend (from 350 to 265 mm) before 2009 and thereafter increased (from 265 to 345 mm); and (4) water use efficiency, indicated by the ratio of Ec to ET, was low in the cropland, with a mean value of 50.9%. Further analysis indicates that decreases in ET are mainly caused by vegetation decreases; in contrast, ecological restriction measures and strict water resource management policies in the middle reaches of the basin led to ET increases. It is concluded that understanding ET and its two components can elucidate the connections between water and human society.
英文关键词	ecosystem management evapotranspiration water use efficiency remote sensing Shiyang River Basin
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold, Green Submitted
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000457129900149
WOS关键词	SHIYANG RIVER-BASIN ; USE EFFICIENCY ; GROUNDWATER RESOURCES ; MINQIN COUNTY ; IMPACTS ; OASIS ; MODIS ; VARIABILITY ; EVAPORATION ; VEGETATION
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218958
作者单位	1.Xiamen Univ Technol, Dept Environm Sci & Engn, Xiamen 361024, Fujian, Peoples R China; 2.Sun Yat Sen Univ, Sch Civil Engn, Guangzhou 510275, Guangdong, Peoples R China; 3.Sun Yat Sen Univ, Guangdong Engn Technol Res Ctr Water Secur Regula, Guangzhou 510275, Guangdong, Peoples R China; 4.Jishou Univ, Sch Civil Engn & Architecture, Zhangjiajie 427000, Hunan, Peoples R China; 5.Sun Yat Sen Univ, Sch Geog & Planning, Guangzhou 510275, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jianfu,Xiong, Yujiu,Tian, Jianlin,et al. Spatiotemporal Changes in Evapotranspiration from an Overexploited Water Resources Basin in Arid Northern China and Their Implications for Ecosystem Management[J],2019,11(2).
APA	Liu, Jianfu,Xiong, Yujiu,Tian, Jianlin,&Tan, Zhihang.(2019).Spatiotemporal Changes in Evapotranspiration from an Overexploited Water Resources Basin in Arid Northern China and Their Implications for Ecosystem Management.SUSTAINABILITY,11(2).
MLA	Liu, Jianfu,et al."Spatiotemporal Changes in Evapotranspiration from an Overexploited Water Resources Basin in Arid Northern China and Their Implications for Ecosystem Management".SUSTAINABILITY 11.2(2019).