INTERACTION BETWEEN THE URBAN ECOSYSTEM AND ENVIRONMENT IN XUZHOU CITY

This paper deals with interacton between the urban ecologic system and environment in Xuzhou City. Environment constrains the function type, layout and operation pattern of the urban ecologic system; On the other hand, the system impacts the environment by input,output and integrated effects induced by input and output, in turn, the actions induces some urban environment problems and caused temporal the disturbance of the urban ecologic system.