Index System of Environmental Impact and Ecological Restoration Model for Urban River Based on Social-economic-natural Complex Ecosystem

In this paper,environmental impact of urban river ecosystem is expatiated,and some principles for index system and identification of environmental impact from urban river ecosystem are analyzed from the aspect of ecosystem function and structure and adaptation ability.And the index system is used to evaluate environmental impact from Huangliangang River which is a representative urban river in Daye City,Hubei Province,suitable ecological restoration models for it are put forward based on its ecosystem function,natural and social function of social-economic-natural complex ecosystem of urban river.