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《Resources and Environment in the Yangtze Basin》 2007-02
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THE SOUTH-TO-NORTH WATER TRANSFER PROJECT AND ITS ECOLOGICAL SECURITY: THE PRIORITIES

ZHANG Quan-fa1,SU Rong-hui2,JIANG Ming-xi1,LI Si-yue1.3(1.Centre for Ecosystem Studies,Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China;2.Bureau of Biological Sciences and Biotechology,Chinese Academy of Sciences,Beijing 1000864,China;3.Graduate University of Chinese Academy of Sciences,Beijing 100049,China)  
The three-route(i.e.East,Middle,and West) South-to-North Water Transfer Project which began in 2002 will divert a total of 44.8 billion m3 of water annually from the Yangtze River to the drought North and Northwest China by 2050.It will somewhat alleviate water shortage in those areas and help a balanced development across the nation.However,such a large interbasin water transfer project will change the aquatic environment of the upper Yellow River by increasing its runoff and also the environment of the lower reach of the Han River due to the decrease in its runoff.The resultant decrease of discharge into the mainstream of the Yangtze River will cause water contamination and seawater intrusion into the Yangtze Delta.Meanwhile,water quality in the upper Han River basin is of great concern,and secondary salinization seems unavoidable in the water receiving areas.This article briefly discusses the necessity and its environmental implications in particular species migration,ecological security of water environment,watershed management for water resource conservation,and rehabitation of degraded ecosystems in the west.A long-term monitoring programme in combination with the Chinese Ecosystem Research Network and National Observatory System for the Environment will be necessary for evaluating its environmental implication.
【Fund】: 中国科学院“百人计划”(01045108);; 湖北省杰出人才基金资助
【CateGory Index】: X171;TV68
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