干旱区生态环境知识资源中心(Arid): Spatiotemporal supply-demand characteristics and economic benefits of crop water footprint in the semi-arid region

Arid

DOI	10.1016/j.scitotenv.2020.139502
	Spatiotemporal supply-demand characteristics and economic benefits of crop water footprint in the semi-arid region
	Ma, Weijing; Opp, Christian; Yang, Dewei
通讯作者	Opp, C
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	738
英文摘要	The notion of water footprint provides a novel perspective for understanding the relationship between physical water and virtual water, especially in agricultural production. In this study, with the help of CROPWAT 8.0 model, we estimate the water footprint requirement (WFr) of main crops growth for 2005, 2010 and 2015 in Zhangjiakou City, an extreme water shortage region in northern China, and three new indicators are introduced, i.e., green water footprint occupancy rate (GWFor), blue water footprint deficit (BWFd), and virtual water consumption per output value (VWV). The results indicate that the total WFr increased from 1.671 billion m(3) to 1.852 billion m(3) during the study period, of which the green water was always about twice as the blue water. Cereals, as the main staple food, had the largest WFr, while the WFr of potatoes increased the fastest, which was the result of large-scale promotion of potato cultivation in recent years. The spatial characteristics of the GWFor and BWFd are closely related to altitude, that is, the GWFor was less than 50% in higher-altitude Bashang area, while it was more than 50% in lower-altitude Baxia area, and the BWFd was generally smaller in Bashang area than in Baxia area. Due to differences in crop types and food prices, higher water footprint food productivity does not absolutely mean higher water footprint economic productivity. Therefore, it is vital to consider from two perspectives (food yields priority or economic benefits priority) to formulate a reasonable water footprint utilization policy. This study is expected to broaden the investigation of crop water footprint and make a contribution to sustainable agricultural water management. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Crop water footprint Green water occupancy rate Blue water deficit Economic benefits Zhangjiakou City
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000568707900013
WOS关键词	RIVER-BASIN ; BLUE ; CONSUMPTION ; FOOD ; GREEN ; CHINA ; NEXUS ; LAND ; RESOURCES ; SECURITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326208
作者单位	[Ma, Weijing; Opp, Christian] Philipps Univ Marburg, Fac Geog, D-35032 Marburg, Germany; [Yang, Dewei] Southwest Univ, Sch Geog Sci, Chongqing 400715, Peoples R China; [Yang, Dewei] Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Ma, Weijing,Opp, Christian,Yang, Dewei. Spatiotemporal supply-demand characteristics and economic benefits of crop water footprint in the semi-arid region[J],2020,738.
APA	Ma, Weijing,Opp, Christian,&Yang, Dewei.(2020).Spatiotemporal supply-demand characteristics and economic benefits of crop water footprint in the semi-arid region.SCIENCE OF THE TOTAL ENVIRONMENT,738.
MLA	Ma, Weijing,et al."Spatiotemporal supply-demand characteristics and economic benefits of crop water footprint in the semi-arid region".SCIENCE OF THE TOTAL ENVIRONMENT 738(2020).