基于时域权重矩阵的模糊综合水质评价法及其应用

Application of improved fuzzy comprehensive water quality assessment based on weight matrix of temporal distribution

水质评价作为合理开发和保护水资源的一项重要工作,越来越受到人们重视。传统的模糊综合水质评价方法因未考虑到水质指标权重的季节变化而可能影响评价结果,故对水质指标权重向量进行了改进,提出了时域权重矩阵的概念,并将实测权重向量与时域权重矩阵相结合,进行组合赋权,得到综合权重向量。应用改进的模糊综合评价方法对某引水明渠水质进行综合评价,结果相比于传统模糊综合水质评价法更符合实际。

Increasing attention is being given to water quality assessments,which is an important tool in reasonable development and water resource protection. Ignoring the influence of seasonal variations,a traditional fuzzy comprehensive water quality evaluation may lead to incorrect information. This study examines an improvement in water quality index weight vectors and puts forward the concept of a weight matrix of temporal distribution. Combining a weight matrix of temporal distribution and a traditional weight matrix,the integrated weight vector is obtained. The results obtained when this method is applied to a diversion channel water quality assessment are more in line with the actual measurements as compared to the traditional method.