A comparative study of China's urbanization process and its carbon emission effect from a global perspective
High-quality urbanization is key to China's modernization and low-carbon and green development transition.Based on the panel data of 195 countries(regions)from 1990 to 2020,this paper measures the com-prehensive urbanization level of each country(region)from four dimensions of population,space,economy and society,and analyzes the impact mechanism of urbanization on carbon emissions in China and different groups of countries based on STIRPAT and EKC theory.The results show that:1)The comprehensive urbaniz-ation level of all countries(regions)around the world shows an increasing trend,with the most obvious im-provement in Asia and Europe.There is a large gap in the comprehensive urbanization level between countries(regions)with different income levels.China's comprehensive urbanization level shows a trend of low start and fast development.2)The proportion of population,space and economic urbanization in countries(regions)around the world is decreasing year by year,while the proportion of social urbanization is steadily rising.And the development quality of comprehensive urbanization is steadily improving.The comprehensive urbaniza-tion development of high-income countries(regions)is mainly dominated by economic urbanization and social urbanization,while the dominant types of comprehensive urbanization in low-income countries(regions)are population urbanization and space urbanization.China's urbanization process has gradually changed from"quantity"driven by urban population to"quality"of coordinated development,but there is still a big gap in the quality of urbanization compared with developed countries.3)There is an"inverted U-shaped"curve rela-tionship between comprehensive urbanization and per capita carbon emissions in high-income,high-urbaniza-tion,and low-income countries(regions),and there is an"U-shaped"relationship in low-income,medium-high urbanization,and low-urbanization countries(regions).China's urbanization and per capita carbon emissions have an"inverted U-shaped"curve relationship,and the inflection point has not yet appeared.Promoting the level of economic urbanization and social urbanization is the key to achieving carbon peaking.Therefore,in the future,China needs to coordinate the relationship between urbanization development,residents'living stand-ards improvement,energy conservation and emission reduction,so as to improve the quality of urbanization and reduce the contribution of urbanization to carbon emissions.