Southwest areas face resource depletion, environmental pollution, ecological damage, and other coordinated economic and social pressures. Complicated interactions exist between the economy, tourism and eco-logical environment subsystem. Accordingly, to understand the operating mechanism of the tourism-economy-ecological environment system and evaluating its coordination level are of immense significance for sustainable urban development. This study uses a coupling coordination degree model (CCDM) that focuses on the coordination of the tourism-economy-ecological environment system, which is established using data from 2004 to 2017 for Chongqing, China. Coordination assessment results based on the CCDM show that the coordination of the economy scenario performs the worst, the environment scenario performs best in the short term. It is consistent with the actual situation in the model.
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