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.
Plain river networkWater diversion testGraph theory connectivityFuzzy comprehensive analysis method
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