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Study on Methods of Evaluation for Water Entrophication

CHANG Hui-qing et al(College of Agriculture,Henan University of Science and technology,Luoyang,Henan 471003)  
The characteristic method,the parameter method,the biology index parameter method,the nutrition status index method,the mathematics evaluative method and so on were particularly expounded,respectively.The classification standards of all kinds of evaluative methonds and their corresponding applicative condtions were introduced,in order to evaluate water ecosystem accurately,manage our lakes and protect the ecological environment properly
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