干旱区生态环境知识资源中心(Arid): Distribution of small seasonal reservoirs in semi-arid regions and associated evaporative losses

Arid

DOI	10.1088/2515-7620/ab92af
	Distribution of small seasonal reservoirs in semi-arid regions and associated evaporative losses
	Mady, Bassem; Lehmann, Peter; Gorelick, Steven M.; Or, Dani
通讯作者	Mady, B
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
ISSN	2515-7620
出版年	2020
卷号	2 期号:6
英文摘要	To support the increasing demand of a growing population for freshwater, small-sized (<0.1 km(2)) water reservoirs are necessary in areas with limited infrastructure, especially in water-stressed regions having seasonal and variable precipitation. Seasonal storage in small reservoirs is often overlooked in present inventories. Accordingly, we assessed the current state in semi-arid regions using highly resolved Sentinel-2 satellite imagery. Globally, about 3 million small reservoirs are in operation in semi-arid regions having a total water surface area of 17 800 km(2) and seasonal storage of 37 km(3), supporting 15% of the world's population in semi-arid regions. Estimated upper-bound of evaporative losses represent 38% (14 km(3)) of storage during dry season. The study estimates the evaporation suppression using floating covers and lays foundation to assess the feasibility of this technical solution to increase water savings. Significance and originality statement This study provides new insights into the distribution of seasonal freshwater storage in water stressed regions that support large rural population. We provide the first baseline dataset of this distributed freshwater resource to better assess the sustainability of communities in semi-arid regions with chronic water shortages. Water storage in semi-arid regions is subject to potential evaporative losses of nearly 40% of the stored water. We analyzed conditions where evaporative losses could be significantly reduced using floating covers, a simple and scalable solution suitable for regions with underdeveloped economies. The study as well ranks regions with highest potential benefits from evaporation suppression measures.
英文关键词	small reservoirs semi-arid seasonal water storage water resources monitoring floating covers evaporation suppression dry season evaporation
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000579512200002
WOS关键词	IRRIGATION RESERVOIRS ; FARM DAMS ; WATER ; LAKES ; IMPACTS ; PONDS
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/2XILL650/326871
作者单位	[Mady, Bassem; Lehmann, Peter; Or, Dani] Swiss Fed Inst Technol, Dept Environm Syst Sci, Zurich, Switzerland; [Gorelick, Steven M.] Stanford Univ, Sch Earth Energy & Environm Sci, Stanford, CA 94305 USA
推荐引用方式 GB/T 7714	Mady, Bassem,Lehmann, Peter,Gorelick, Steven M.,et al. Distribution of small seasonal reservoirs in semi-arid regions and associated evaporative losses[J],2020,2(6).
APA	Mady, Bassem,Lehmann, Peter,Gorelick, Steven M.,&Or, Dani.(2020).Distribution of small seasonal reservoirs in semi-arid regions and associated evaporative losses.ENVIRONMENTAL RESEARCH COMMUNICATIONS,2(6).
MLA	Mady, Bassem,et al."Distribution of small seasonal reservoirs in semi-arid regions and associated evaporative losses".ENVIRONMENTAL RESEARCH COMMUNICATIONS 2.6(2020).