Fuzzy comprehensive model based on combination weighting in watershed application of ecological health assessment

Abstract

Watershed ecological environmental health assessment is an important basis for the rational development and utilization of water resources in the basin, economic and social sustainable development and ecological environment protection, and it is also a systematic diagnosis method for the ecological health status of the basin. On the basis of determining the ecological health evaluation index of the Shule River Basin, the weights of each index were determined by using the combination weighting method, and a comprehensive assessment of the ecosystem health of the river basin was made using the fuzzy comprehensive evaluation method. The degree of membership of the Shule River Basin is 0.316, which belongs to the sub-health (0.3 to 0.5) state.