“…The Yangtze River basin spans three major economic zones in eastern, central and western China, with a total of 19 provinces, and is the largest basin in Asia and the third largest in the world, with a total basin area of 1.8 million km 2 , accounting for 18.8% of China's land area, and rich natural resources in the basin (Lai et al, 2013). The Yangtze River basin contains the Yangtze River Delta city cluster, the middle reaches of the Yangtze River city cluster, the Chengdu-Chongqing city cluster and other national city clusters, which is an important east-west axis of China's territorial space development, an important support to promote China's western development, the rise of central China, the first development of the east and other strategies and is also the most influential inland economic belt in the world (Tian and Sun, 2018;An et al, 2022;Zhou et al, 2022).…”