中文摘要：

综合水质标识指数法是一种既相对简单又能综合反映河流水质整体水平的方法。采用综合水质标识指数法对2000—2010年湟水干流4个断面的水质监测数据进行评价，结果表明：湟水各断面的综合水质类别达到或优于水功能区的目标要求。将综合水质标识指数法评价结果与国标推荐的单因子标识指数法评价结果进行比较表明，单因子标识指数法评价结果（水质类别）要差于综合水质标识指数法评价结果，表明单因子标识指数法以最差的水质类别作为水质综合评价的结果，不能全面反映水质的整体状况，而综合水质标识指数法能综合反映河流水质的整体状况。

英文摘要：

Comprehensive water quality identification index method is relatively simple,and it can lead a comprehensive reflection of the overall level of river water quality approach. It had been used to monitor the water quality of Huangshui River in four sections water quality from 2000 to 2010. The results show that the comprehensive water quality category is equal to or better than water function area goals and objectives of Huangshui River. In order to present the superiority of comprehensive water quality identification index method further,and comparing the evaluation results with GB recommended single factor identification index （GB recommended）,the results show that single factor identification index method is the worst quality range,which can＆#39;t fully reflect the integrity of the water quality defects and comprehensive water quality identification index method can comprehensively reflect the whole situation of the river water quality.