Monthly blue water footprint caps in a river basin to achieve sustainable water consumption: The role of reservoirs

doi:10.1016/j.scitotenv.2018.09.090

	Monthly blue water footprint caps in a river basin to achieve sustainable water consumption: The role of reservoirs
	Zhuo, La 1,4,5; Hoekstra, Arjen Y.2,3; Wu, Pute 1,4,5; Zhao, Xining 1,4,5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-02-10
卷号	650 页码:891-899
关键词	Sustainable blue water footprint Reservoir storage Blue water scarcity Environmental flow requirement
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2018.09.090
通讯作者	Zhuo, La(zhuola@nwafu.edu.cn) ; Wu, Pute(gjzwpt@vip.sina.com)
英文摘要	The bluewater footprint (WF) measures the consumption of runoff in a river basin. In order to ensure sustainable water consumption, setting a monthly blue WF cap, that is an upper-limit to the blue WF in a river basin each month, can be a suitable policy instrument. The blue WF cap in a river basin depends on the precipitation that becomes runoff and the need to maintain a minimum flow for sustaining ecosystems and livelihoods. Reservoirs along the river generally smooth runoff variability and thus raise the WF cap and reduce blue water scarcity during the dry season. Previous water scarcity studies, considering the ratio of actual blue WF to the blue WF cap under natural background conditions, have not studied this effect of reservoir storages. Here we assess how water reservoirs influence blue WF caps over time and how they affect the variability of blue water scarcity in a river basin. We take the Yellow River Basin over the period January 2002-July 2006 as case study and consider data on observed storage changes in five large reservoirs along the main stream. Results indicate that reservoirs redistribute the blue WF cap and blue water scarcity levels over time. Monthly blue WF caps were generally lowered by reservoir storage during the flood season (July-October) and raised by reservoir releases over the period of highest crop demand (March-June). However, with water storage exceeding 20% of natural runoff inmost rainy months, reservoirs contribute to "scarcity in the wet months", which is to be understood as a situation in which environmental flow requirements related to the occurrence of natural peak flows are no longer met. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	Chinese Academy of Sciences[XAB2017B03] ; Northwest A F University[2452017010] ; Fundamental Research Funds for the Central Universities[2452017181] ; Department of Human Resources and Social Security of Shaanxi Province[2017034]
WOS关键词	ENVIRONMENTAL FLOW REQUIREMENTS ; SCARCITY ; RESOURCES ; CHINA ; IRRIGATION ; SYSTEMS ; STORAGE ; AFRICA ; CROPS ; WORLD
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000447092700092
资助机构	Chinese Academy of Sciences ; Northwest A F University ; Fundamental Research Funds for the Central Universities ; Department of Human Resources and Social Security of Shaanxi Province
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52795]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhuo, La; Wu, Pute
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Univ Twente, Twente Water Ctr, POB 217, NL-7500 AE Enschede, Netherlands 3.Natl Univ Singapore, Inst Water Policy, Lee Kuan Yew Sch Publ Policy, Singapore 259770, Singapore 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.Natl Engn Res Ctr Water Saving Irrigat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhuo, La,Hoekstra, Arjen Y.,Wu, Pute,et al. Monthly blue water footprint caps in a river basin to achieve sustainable water consumption: The role of reservoirs[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,650:891-899.
APA	Zhuo, La,Hoekstra, Arjen Y.,Wu, Pute,&Zhao, Xining.(2019).Monthly blue water footprint caps in a river basin to achieve sustainable water consumption: The role of reservoirs.SCIENCE OF THE TOTAL ENVIRONMENT,650,891-899.
MLA	Zhuo, La,et al."Monthly blue water footprint caps in a river basin to achieve sustainable water consumption: The role of reservoirs".SCIENCE OF THE TOTAL ENVIRONMENT 650(2019):891-899.