A grid-based assessment of global water scarcity including virtual water trading

被引：0
|
作者：
Islam, Md. Sirajul [1 ]
Oki, Taikan [1 ]
Kanae, Shinjiro [1 ]
Hanasaki, Naota [1 ]
Agata, Yasushi [1 ]
Yoshimura, Kei [1 ]
机构：
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1530041, Japan
来源：
WATER RESOURCES MANAGEMENT | 2007年 / 21卷 / 01期
关键词：
global water scarcity; virtual water trading; grid-based analysis; water stress index; spatial distribution of stress;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A 0.5-degree grid-based assessment of the scarcity of global water resources including virtual water trading has been made. The three components of water availability considered for each grid were local runoff, routed flow from upstream and virtual water trading. Several assumptions were postulated to convert country-base estimations of virtual water trading to grid values. The results show that unequal spatial distribution of global water resources had been considerably neutralized by virtual water trading. A large proportion of people in the Middle-East, North-Africa and Sub-Sahara region are able to relieve their water stress through virtual water import. The paper also reports two hypothetical scenarios with extremes of natural flow availability based on the presence and absence of routed upstream flow.
引用
收藏
页码：19 / 33
页数：15
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