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A Discussion on the Methods to Recover the Acquatic Ecosystem of East Lake

XU Jun-hua,CHEN Xin-lei (College of Life Sciences, Wuhan University, Wuhan 430072, Hubei, China)  
Using the experiences in recovering the acquatic ecosystem of lake at home and aboard, how to recover the acquatic ecosystem of East Lake is discussed. ①physical methods :blocking the pollution ,clearing away the silt and importing water to eliminate the pollution ;②chemical methods:eliminating the nitrogen and phosphous and controlling or killing the algae by chemical means;③biologicals methods:outputing the nitrogen and phosphous with biological mass and controlling the algae with biological means.
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