Tongling City,the non-optimal tourism district,is a mineral resources exhausted city,and it is now at a crucial stage of social and economic transformation.In virtue of capacity coupling system model,this paper analyses its' time series cross coupling of 3 subsystems of the environment,culture and tourism,and uses synergetics theory of coevolution research on the tourism system.The results show that,from 2001 to 2012 in Tongling City,the two composite coupling system and tourism complex system development degrees showed an upward trend; 2 kind...