中文摘要：

提出一种基于改进层次分析法（AHP）权重的二级灰色关联分析法（AHP-GCA）来对京杭运河杭州段4个典型断面进行水质综合评价.评价始终围绕京杭运河杭州段的主要污染因子,4个断面的水质以及整个杭州段的综合水质的空间走向展开;并用基于改进AHP权重的模糊综合评价法作验证比较.结果证明,2种方法评价结果基本一致,但AHP-GCA评价结果更为客观,计算过程更为简便.

英文摘要：

A gray correlation analysis（GCA） method based on improved analytic hierarchy process（AHP） weight is proposed to evaluate water quality of typical cross-sections（Hangzhou Section） of the Grand Canal comprehensively.It is always focused on evaluation of the main pollution factors,water quality of the four sections and spatial trends of comprehensive water quality in the whole Hangzhou Section.A fuzzy comprehensive evaluation based on the improved AHP weight is used for validation and comparison.It is shown that the evaluation results of two methods are basically the same;but AHP-GCA is more objective and its calculation progress is more convenient.