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《Shandong Agricultural Sciences》 2009-12
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Study of Eutrophication in Main Stream and Tributaries of Yangtze River in the Three Gorges Reservoir Area

HU Zheng-feng1,ZHANG Lei1,QIU Qin1,HAN Guang1,LI Xing-qiong2(1.College of Resources and Environment,Southwest University,Chongqing 400716,China;2.Environmental Protection Agency,Yunyang County,Chongqing 404500,China)  
The upper reaches of the Yangtze River in Chongqing is densely populated.Due to some historical reasons,the environmental infrastructure there is backward.Huge quantities of intreated industrial wastewater,sewage from cities,shipping pollutants and surface runoff of large areas of farmlands are poured into the Yangtze River and its sub-rivers.In particular after the completion and storage of the Three Gorges Dam,the flow velocity of the main channel as well as the tributaries obviously slows down in addition to the long-distance backwater,so the eutrophication has arisen in certain sub-rivers since the year 2003 and has a tendency to worsen.In this paper,the nutritional status of the inflow rivers of the Three Gorges Reservoir were integratedly studied,and a comprehensive assessment of the nutritional status of the branch rivers was obtained.Finally,some suggestions were made for preventing and controlling the eutrophication in the Three Gorges Reservoir Area by summarizing some effective measures of the prevention and control of eutrophication at home and abroad.
【Fund】: 国务院三峡工程建设委员会办公室重点科技项目(项目编号:KY-01-02-01)
【CateGory Index】: X524
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