Fuzzy Synthetic Evaluation of Water Quality in Honghu Lake

Twenties water samples were collected in June,2006,five indices were used to comprehensively assess the water quality of Honghu Lake(one lake in Honghu city,Hubei province)with the fuzzy synthetic evaluating model.The result showed that water quality analysis was effective by the use of the fuzzy evaluation.The evaluation result also showed that the water quality status was mainly ranged to the third class,which did not meet the demands of the lake's functions.The results provided the theory basis for the ecological restoration projects of Honghu Lake.