This paper is accomplished on the basis of Key Scientific and Technological Project of Qingdao City, the study of pollution control and optimized utilization of water resources in Dagu River Valley.
本论文是在青岛市科技攻关项目《大沽河流域水资源优化利用与污染控制研究》的基础上完成的。
Water environment problems of Yangtze valley are caused by many factors, such as industry and agriculture pollution, city consumer pollution, soil and water loss etc.
长江流域水环境问题是由多种因素引起的，如工农业污染、城市生活污染、水土流失等。
The grey system assessment method, air pollution integrated index are applied to evaluate the atmosphere, surface water, noise environmental quality of valley cities in western China.
本文首先采用灰色系统评价方法、空气污染综合指数等方法对中国西部河谷型城市大气、地表水、噪声环境质量进行了客观评价。
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