黄河三门峡河段基于模糊数学方法的水质评价

The Evaluation of Water Quality of Sanmenxia Reach Based on Fuzzy Math

水体质量受多种因素的影响,水质评价是对多种因素的综合评价,水环境污染及其程度的轻重属于模糊概念,水质分级实质是水体影响因素论域上的模糊子集,因此采用模糊综合评价方法对水质进行评价较为合适。介绍了模糊综合评价方法及步骤,并且针对在利用模糊数学方法评价水质时各个影响因子权重难以确定的状况,采用了解相关模糊方程法来确定权重,有效地避免了主观因素的干扰,最后,依据《地表水环境质量标准》(GB3838-2002)作为水质评价标准,对黄河三门峡河段水质进行了评价,并与相关文献作一比较,总体效果较为满意。

Water quality is affected by a number of factors,quality evaluation of the various factors comprehensive evaluation pollution of the water environment and its degree of severity is a fuzzy concept.Water is the essence of grading factors water domain of fuzzy sets,so fuzzy comprehensive evaluation method for evaluation of water quality more appropriate.On the fuzzy comprehensive evaluation methods and steps and against the use of fuzzy math to evaluate the quality of various factors it is difficult to determine the weights of the situation,using fuzzy understanding of the relevant equation method to determine the weights,effectively avoid the interference of the subjective factors,finally,based on ＂Surface Water Quality Standards＂（GB3838-2002） as a water quality evaluation criteria,Sanmenxia on the Yellow River Reach for the evaluation of water quality,and with the relevant literature for a comparison,the result is satisfied.