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In order to diagnose the ecological health status of rivers in cold area more scientifically, This paper analyzes the characteristics of rivers in cold regions, and references the relevant literature to diagnose the health status of rivers according to the characteristics of river health by using the analytic hierarchy process and the fuzzy comprehensive method. Select the HunheShen Fu period as a case, determine the weight of each index and the status quo. The diagnosis results show that the river health level of Shenhe section of Hunhe River is in a sick state, and the main influencing factors are water quality and hydrological indexes. Based on this, the suggestions of river rehabilitation are put forward.

Study on Health Status of Rivers in Shen-Fu Section of Hun River Based on Fuzzy Comprehensive Diagnosis