干旱区生态环境知识资源中心(Arid): Increased evapotranspiration from land cover changes intensified water crisis in an arid river basin in northwest China

Arid

DOI	10.1016/j.jhydrol.2019.04.045
	Increased evapotranspiration from land cover changes intensified water crisis in an arid river basin in northwest China
	Chen, Yaoliang 1,2; Wang, Shusen 3; Ren, Zhiguo 4; Huang, Jingfeng 5; Wang, Xiuzhen 6; Liu, Shanshan 1,2; Deng, Haijun 1,2; Lin, Wenke 1,7
通讯作者	Huang, Jingfeng
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	574 页码:383-397
英文摘要	Evapotranspiration (ET) plays an important role in determining the available water resources of a basin. In past decades, the Heihe River basin (HRB) in Northwest China has suffered severe water crisis and ecological problems due to large land cover changes (LCCs), especially oases expansion for irrigation agriculture. This study quantifies the ET variations due to LCCs in the HRB from 2000 to 2015 using the Ecological Assimilation of Land and Climate Observations (EALCO) model and detailed LCC measurements. Large variations in ET with land cover type is seen in the HRB. In the past fifteen years, crop expansion from bare soil or desert grass caused most of the increase in ET, while the conversion of alpine grass to desert grass caused most of the decrease in ET. As a result, a net 1.03 billion m(3) of increased water consumption per year resulted from the overall LCCs in the HRB. This increased water use for ET largely intensified the water crisis in the HRB and deteriorated the health of the downstream ecosystems. Our results show that the water consumed in crop expansion can be used to recover almost ten times the area of the degraded desert grass ecosystem. A stricter policy that limits agriculture expansion is recommended in land use planning for a sustainable ecosystem development in the basin. This study also helps to better understand ET changes from LCCs and manage the limited water resources for sustainable ecosystem development in other arid regions of the world.
英文关键词	Evapotranspiration Water resource Land cover change Crop expansion Land surface model EALCO model
类型	Article
语种	英语
国家	Peoples R China ; Canada
收录类别	SCI-E
WOS记录号	WOS:000476962800031
WOS关键词	CANOPY STOMATAL CONDUCTANCE ; BOREAL ASPEN FOREST ; POPULUS-EUPHRATICA ; ENERGY-EXCHANGE ; SURFACE ALBEDO ; TIME-SERIES ; MODEL ; CARBON ; CO2 ; DYNAMICS
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217160
作者单位	1.Fujian Normal Univ, Minist Sci & Technol & Fujian Prov, State Key Lab Subtrop Mt Ecol, Fuzhou 350007, Fujian, Peoples R China; 2.Fujian Normal Univ, Inst Geog, Fuzhou 350007, Fujian, Peoples R China; 3.Nat Resource Canada, Canada Ctr Remote Sensing, Ottawa, ON K1A 0E4, Canada; 4.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Heihe Remote Sensing Expt Res Stn, Lanzhou 730000, Gansu, Peoples R China; 5.Zhejiang Univ, Inst Appl Remote Sensing & Informat Technol, Hangzhou 310058, Zhejiang, Peoples R China; 6.Hangzhou Normal Univ, Inst Remote Sensing & Earth Sci, Hangzhou 311121, Zhejiang, Peoples R China; 7.Fujian Normal Univ, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Fuzhou 350007, Fujian, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yaoliang,Wang, Shusen,Ren, Zhiguo,et al. Increased evapotranspiration from land cover changes intensified water crisis in an arid river basin in northwest China[J],2019,574:383-397.
APA	Chen, Yaoliang.,Wang, Shusen.,Ren, Zhiguo.,Huang, Jingfeng.,Wang, Xiuzhen.,...&Lin, Wenke.(2019).Increased evapotranspiration from land cover changes intensified water crisis in an arid river basin in northwest China.JOURNAL OF HYDROLOGY,574,383-397.
MLA	Chen, Yaoliang,et al."Increased evapotranspiration from land cover changes intensified water crisis in an arid river basin in northwest China".JOURNAL OF HYDROLOGY 574(2019):383-397.