Spatiotemporal Analysis of the Coupling Coordination Degree between Haze Disaster and Urbanization Systems in China from 2000 to 2020

Quantitative evaluation of the coupling coordination degree (CCD) between regional haze disaster risk index (HRI) and urbanization development level (UDI) is great significance for realization sustainable goals. Given lack combination remote sensing statistical data to evaluate CCD two systems, Chinese mainland’s 31 provinces autonomous regions were taken their HRI UDI by building systems. Then, an entropy method one improved model used calculate analyze spatiotemporal characteristics during 2000–2020. The results showed that: (1) From 2000 2020, value in China a “W” type change trend with its increased from 0.7041 0.8859 indicating that pollution fluctuating downward trend; (2) China’s values gradual upward 0.1647 0.4640 average annual growth rate 8.63%; (3) 0.5374 0.7781 2.13%; overall had raised low moderate coordination, eastern coastal higher values, while those central western lower values; (4) HRI, could be well fitted R2 0.9869. Specifically, contribution improving than HRI.