Extension Method and Its Application of Lake Eutrophication Assessment

For comprehensive assessment of lake eutrophication problems,in outlining the methods of lake eutrophication assessment,an extension method for evaluation was introduced and its characteristics,the ability to distinguish strong and without loss of information were analyzed.The extension evaluation method has been used to Honghu Lake eutrophication assessment from August 2005 to July 2006.The results show that state of nutrition introduced into lake area,breeding areas,open areas,protected areas and the whole lake are light eutrophic,light eutrophic,light eutrophic,in the eutrophic and light eutrophic in sequence.The evaluation results are consistent with that of fuzzy mathematical method,the method is feasible for eutrophication assessment.