东昌湖水质评价分析

东昌湖是山东省著名城市湖泊风景区，根据2006年水质监测数据，从地表水水质级别、景观娱乐用水标准和湖泊富营养化级别3个方面出发，分别利用模糊模式识别方法，浓度指数法和评分法对东昌湖现状水质进行了评价分析.评价结果为东昌湖水体水质为Ⅳ类，部分污染物指标不满足景观娱乐用水要求，水体呈富营养化状态.最后提出了建议和措施.

Accessment and analysis of water quality of Dongchang Lake

Dongchang Lake is a famous city lake beauty spot in Shandong Province. Based on the water quality data of 2006, the water quality of Dongchang Lake is assessed and analyzed by fuzzy pattern recognition model, concentration exponent method and rating method, in terms of surface water quality standard, scenery and recreation water using standard and lake eutrophication.  The results show that the water quality of Dongchang Lake is of class Ⅳ, and some contaminant indices  do not satisfy the requirement of scenery and recreation water using standard, and the water is resulted in eutrophication. Finally, suggestions and measures are put forward according to the evaluation results.