Spatio-temporal coupling analysis between the regional tourism economy and eco-environment in the Yunnan-Guizhou-Sichuan region

Studying the coupling relationship between the tourism economy and the eco-environment is important for the sustainable development of regional economy. This paper established evaluation models for the tourism economy and eco-environment using data of the Yunnan-Guizhou-Sichuan region between 2010 and 2022. The entropy weighting approach was used to determine the weights. The development levels of the two systems were calculated. The spatio-temporal coupling relationship was analysed based on the coupling coordination degree (CCD) model. The overall development levels of the tourism economy and eco-environment in the three provinces showed an upward trend in that period. The CCD also increased annually. Yunnan Province achieved a good coordination level in 2022, while Guizhou and Sichuan Provinces were at an intermediate level, indicating room for further development. This study not only verifies the effectiveness of the CCD model but also provides useful references for the coordinated development of other similar areas.