长江马鞍山段水质的二级模糊综合评价

模糊数学应用于水质评价,目前广泛采用的是一级综合评价模型,由于水质污染是由多种污染因素综合作用的结果,一级评价模型很难适应多因素评价的要求。本文在分析一级模糊综合评价方法的基础上,提出了水质的二级模糊综合评价模型,并对长江马鞍山段水质进行了综合评价,客观地揭示了长江水质现状以及沿江工业城市对长江水质的影响。

The Application of the Model of Two-stage Fuzzy Multifactorial Evaluations to the Water Quality Assessment in the Yangtse River Near Ma-anshan

The model of one-stage fuzzy multifactorial evaluations in fuzzy theory is now widely applied to the water quality assessment. Yet this model is rather limited in that it can hardly meet the requirement of multifactorial evaluations, since the pollution of water quality is attributable to many fators. In this paper, we put forward that the model of two-stage fuzzy multi factorial evaluations is used to assess the water quality in the Yangtse River near Ma-anshan, which overcomes the defect of one-stage model. The study shows the present situation of the Yangtse's water quality and the effects of the cities along Yangtse Rive on the water quality.