Establishment and application of the index system for urban river health assessment

In this paper, the concept of the urban river health was discussed firstly, and then the evaluation index system was constructed based on the connotation of urban river health, including 24 indexes in natural ecology, social economy and landscape environment. The index system consists of sub-target layer, criteria layer and index layer, considering the natural ecology, social economy and landscape environment of the urban river. Taking the urban reach of the Lijiang River as a case, the river health status was evaluated using fuzzy comprehensive evaluation model and analytic hierarchy process (AHP) by determining the weights of the criteria layer and index layer.