Exploring the coordinated development of the tourism economy and ecological environment in China’s border areas is of great significance for promoting high-quality tourism development and ecological barrier construction in these regions. This study constructed an evaluation index system for the tourism economy and ecological environment in China’s border provinces and employed the comprehensive index method as well as coupling coordination, interactive coercion, and obstacle degree models to analyze the basic indices, coupling coordination relationship, interactive coercion relationship, and major obstacle factors of the tourism economy and ecological environment from 2009 to 2019. The results show the following. (1) The tourism economy index increased rapidly, presenting a distribution pattern of “high in the southwest, second in the northeast, and low in the northwest”; the ecological environment index fluctuated but rose, showing a distribution pattern of “single-pole leading and convergence among multiple provinces”, with Xizang maintaining a relatively good level. (2) The coupling coordination degree between the tourism economy and ecological environment steadily improved, with Liaoning, Yunnan, Xizang, and Guangxi achieving relatively good coordination levels. (3) The relationship between the tourism economy and ecological environment exhibited an evolutionary process of “stress first, then coordination”, characterized by spatial heterogeneity; therefore, each province should optimize the interactive coercion relationship according to local conditions. (4) Ecological environment state, tourism economic efficiency, and tourism economic scale are the main obstacle factors affecting the coordination between tourism and ecology. Regarding specific indicators, most provinces share common characteristics in their obstacle factors, while Liaoning and Xizang display unique particularities.
Tian et al. (Sun,) studied this question.