| Economic globalization has exerted a far-reaching impact on all countries and regions in the world,increasing trade between countries and contributing to the stable development of the global economy.However,economic globalization also has a certain negative impact,highlighting the contradictions between countries,and global environmental problems emerge in an endless stream,carbon dioxide emissions are increasing year by year,air quality decline.The United States is the world’s leading economic power,and China is the largest developing country.Of course,as major countries in the world,they also emit a lot of pollutants,so the two countries are of representative significance.Taking this as the starting point,this paper selects China and the United States as the research objects,and mainly analyzes the decoupling between their carbon emissions and economic growth.Economy and environment are both important components of social progress.With the active cooperation of the government,the market and individuals,the functional relationship between the two is balanced organically.When carbon emissions and economic growth reach a state of strong decoupling,the society presents a good appearance of sustainable development.In the first chapter,the sustainable development theory,kuznets curve hypothesis theory and decoupling development theory are briefly summarized.The second chapter describes the level of economic development,environmental history in China and the United States and the present situation,the United States as a veteran of the developed countries,whether it is gross domestic product,or GDP,per capita are ahead of China in terms of environmental governance,enacted a number of practical and effective laws and regulations,effectively suppresses the enterprise to the discharge of pollutants in the air,improve the quality of the environment,for China’s environmental governance has many place worthy of learning.Second,in the third chapter constructs the CKC curve model of carbon emissions and economic growth,granger causality test,found that the total carbon emissions,per capita carbon emissions,and there are granger causality relationship between per capita GDP,but carbon intensity and there is no granger causality relationship between per capita GDP,by regression analysis found that the total carbon emissions,per capita carbon emissions and present the inverted u-shaped relationship between per capita GDP,carbon emissions intensity and GDP per capita does not exist,granger causality to do regression analysis also does not make sense.In the fourth chapter,the Tapio decoupling model is used to calculate the decoupling status of carbon emissions and economic growth in China and the United States.The results show that China is mainly in a state of weak decoupling,with carbon emission intensity and economic growth in a state of strong decoupling,while the carbon emission index and economic growth in the United States are basically in a state of strong decoupling.Based on this,in chapter 5,the author proposes that China should coordinate the relationship between trade opening,economic growth and carbon emission reduction,formulate and implement relevant laws and regulations,and pay attention to environmental protection while economic development. |