With global climate warming,the problem of carbon dioxide emissions reduction has attracted worldwide attention in the recent past.As the largest carbon emitter,China must gradually reduce the carbon emissions in the process of economic development.Drawing on the time series data between 1978 to 2009 and using variable parameter model,this paper analyzes the dynamic effects on carbon dioxide emissions of population and consumption in China.Results show that there is a long-term stable relationship among population,consumption and carbon dioxide emissions,and the effects of population and consumption are very significant.Overall,the population elasticity is greater than the consumption elasticity,but the gap becomes smaller in recent years.Influence of consumption is increasing.There is a regular pattern in the trend of impact elasticity of population and consumption,and the trend can be divided into three distinct phases.With these findings,this paper discusses policy implications for reducing carbon dioxide emissions relating to population and consumption.

Climate change and carbon dioxide emissions problems have attracted worldwide attention.Generally speaking,the carbon dioxide emissions of a country are decided by the interaction of many factors,and the role of these factors may be different.Using data of China’s 30 provinces,this paper analyzes the relationship between carbon dioxide emissions and population,economy and technology based on dynamic panel model.The results show that the influence of population,economy and technology on carbon dioxide emissions varies across different regions.While the relationship between population and carbon dioxide emissions is mutual,economic growth increases carbon emissions,but the technological progress reduces it.In addition,China’s carbon dioxide emissions are clearly path dependence;that is,current economic growth will affect the air quality after one to three years.Based on these findings,this paper provides suggestions to reduce carbon dioxide emissions in order to facilitate China’s low-carbon economy.