基于模糊综合分析法的引调水工程水质响应关系分析

为提升引调水工程的环境改善效果，须对水体的自身连通水平、水质现状、水环境主要影响因子进行分析。以太湖流域跃进联圩为研究对象，利用图论连通度理论对研究区域静态基流连通性进行评价，探索圩内水系连通性的空间差异及变化特性。同时，开展短期引调水实验，结合模糊综合分析法评价引调水带来的圩内水质变化情况及规律，研究圩内水环境和水系连通性的响应关系。结果表明，模糊综合评价法在引调水环境改善分析中具有适用性，可实现对圩内各监测点位水质变化的全面分析；水体流动性是影响圩区内水质的重要环境因素，高锰酸盐指数是导致圩内水质恶化的主要影响因子。引调水工程对圩区水环境具有一定的持续改善性作用，但对基流连通性较差的区域，改善效果有限。

Analysis of Water Quality Response Relationship of Water Diversion Project Based on Fuzzy Comprehensive Analysis Method

To improve the environmental improvement effect of water diversion projects， it is necessary to analyze the self connection level， water quality status and main influencing factors of water environment. This study takes the Yuejin polders which located in Taihu basin as the research object， uses the graph theory connectivity theorem to evaluate the static base flow connectivity in the study area， furtherly explores the spatial differences and variation characteristics of the connectivity of water systems in the study area. Meanwhile， short term water diversion experiments were carried out， and the fuzzy comprehensive analysis method was used to evaluate the changes of water quality and the response relationship between the water environment and water system connectivity. The results show that the fuzzy comprehensive evaluation method has applicability in the analysis of water environment improvement， and could realize a comprehensive analysis of the water quality changes. Water fluidity is an important environmental factor affecting the water quality， and permanganate index is the main influencing factor that leads to the deterioration of water quality in the study area. The water diversion project has a certain continuous improvement effect on the water environment in the polder area， but the improvement effect is limited in the area with poor base flow connectivity.