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Global Agricultural Water Scarcity Assessment Incorporating Blue and Green Water Availability Under Future Climate Change

文献类型：期刊论文

作者Liu, Xingcai2,3,4; Liu, Wenfeng5; Tang, Qiuhong3,6; Liu, Bo7; Wada, Yoshihide1; Yang, Hong2
刊名EARTHS FUTURE
出版日期2022-04-01
卷号10期号:4页码:16
关键词green water soil moisture evapotranspiration crop production climate change water scarcity
DOI10.1029/2021EF002567
通讯作者Liu, Xingcai(xingcailiu@igsnrr.ac.cn) ; Yang, Hong(hong.yang@eawag.ch)
英文摘要Climate change was projected to have negative effects on water availability and consequently a serious constraint to food production in many areas of the world. However, such effects have not been well understood, particularly over rainfed croplands, partly because of the poor representation of green water in associated assessments. In this study, we develop an integrated agricultural water scarcity index (WSIag) that incorporates blue and green water components to examine the agricultural water scarcity in the baseline (1981-2005) and future (2026-2050) periods under the Representative Concentration Pathway (RCP)2.6 and RCP6.0 scenarios. Results show that similar to 3.8 million km(2) (similar to 39% of total) croplands experienced water scarcity in the baseline period and it would expand by more than 3% in the future. Under the two scenarios, WSIag projections are similar overall and are higher than that under the baseline in 83%-84% of global total croplands. Differences are found between the scenarios in Amazonia, Southern Africa, and South Asia. The increases in future WSIag are dominated by the decreased water availability in similar to 60% of total croplands and similar to 24% of which is dominated by the increased crop water requirement. Changes in green water availability have a significant contribution to changes in WSIag in 16% of global croplands, mostly in arid/semiarid regions (e.g., the South edge of the Sahel, Southern Africa, Northeast China, and Central America). This implies the important role of green water management for agriculture in these regions. The integrated assessment can help develop effective strategies for agricultural water management under climate change.
WOS关键词FOOD ; 21ST-CENTURY ; CONSUMPTION ; RESOURCES ; FOOTPRINT ; FLOWS ; CHINA ; MODEL
资助项目National Key R&D Program of China[2019YFA0606903] ; Swiss National Science Foundation[200021_188686] ; National Natural Science Foundation of China[41877164] ; Chinese Universities Scientific Fund[2021RC016]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000787542600001
出版者AMER GEOPHYSICAL UNION
资助机构National Key R&D Program of China ; Swiss National Science Foundation ; National Natural Science Foundation of China ; Chinese Universities Scientific Fund
源URL[http://ir.igsnrr.ac.cn/handle/311030/175407]  
专题中国科学院地理科学与资源研究所
通讯作者Liu, Xingcai; Yang, Hong
作者单位1.Int Inst Appl Syst Anal IIASA, Laxenburg, Austria
2.Eawag, Swiss Fed Inst Aquat Sci & Technol, Dubendorf, Switzerland
3.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
4.Minist Emergency Management China, Key Lab Compound & Chained Nat Hazards, Beijing, Peoples R China
5.China Agr Univ, Ctr Agr Water Res China, Coll Water Resources & Civil Engn, Beijing, Peoples R China
6.Univ Chinese Acad Sci, Beijing, Peoples R China
7.Minist Water Resources China, Int Econ & Tech Cooperat & Exchange Ctr, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xingcai,Liu, Wenfeng,Tang, Qiuhong,et al. Global Agricultural Water Scarcity Assessment Incorporating Blue and Green Water Availability Under Future Climate Change[J]. EARTHS FUTURE,2022,10(4):16.
APA Liu, Xingcai,Liu, Wenfeng,Tang, Qiuhong,Liu, Bo,Wada, Yoshihide,&Yang, Hong.(2022).Global Agricultural Water Scarcity Assessment Incorporating Blue and Green Water Availability Under Future Climate Change.EARTHS FUTURE,10(4),16.
MLA Liu, Xingcai,et al."Global Agricultural Water Scarcity Assessment Incorporating Blue and Green Water Availability Under Future Climate Change".EARTHS FUTURE 10.4(2022):16.

入库方式： OAI收割

来源：地理科学与资源研究所

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