[Figure 6]
Additionally, the variations of ecosystem indicators were different among cities (Fig 7). The ecosystem vigor increased wholly, mainly in Inner Mongolia, Shaanxi, Gansu, Yunnan, Guizhou, and Guangxi provinces. Nevertheless, vigor in cities along the middle and lower reaches of the Yellow River basin and the Yangtze River basin showed a downward trend (Fig 7a). Furthermore, ecosystem organization and resilience were dominated by a slight decline state, with relatively prominent in the areas east of the Hu Line (Fig 7b, 7c). In addition, the change rate of EHI mainly displayed slightly increased (Fig 7d). However, some cities witnessed degraded ecosystem health, mainly in the Tibet Autonomous Region, Heilongjiang Province, southern Liaoning Province, Hebei Province, the middle and lower reaches of the Yellow River Basin, and along the Yangtze River Basin, with a significant decline in the YRD area.