The Interactive Relationships between the Tourism-Transportation-Ecological Environment System of Provinces along the ‘Silk Road Economic Belt’ in China

Taking nine provinces and cities along the ‘Silk Road Economic Belt’ as an example, this paper constructs evaluation index system of coupling coordination degree tourism–transportation–ecological environment (TTE system), analyzes spatial–temporal evolution regional differences level TTE from 2004 to 2016 using mean square error model scissor difference model, uses EKC curve further verify interactive relationship between tourism economy ecological environment. The results show following. (1) comprehensive values subsystem transportation are on overall upward trend value is in constant flux. (2) generally develops a good direction, but conversion rate each province different. (3) Regarding north–south region divergence, within “strong south weak north”. (4) interdependent mutually restrictive. (5) There strong correlation tourism, economic growth, environmental quality, most provinces, them does not accord with inverted U-shaped Kuznets curve.