Research On Influencing Factors Of G20's Carbon Dioxide Emission

Greenhouse effect is the problem faced by the whole world.During the last two decades,though the regional and global environmental policies have been continually emerging,global carbon dioxide emissions increases from 22 Mkt in 1992 to 36Mkt in 2013.Carbon dioxide is the by-products of economic development,population growth,urbanization and international trades,control of carbon dioxide emission will hinder the economic development,however it is the inevitable requirement of sustainable development.So it is necessary to find an environmentally-friendly way,to promote economic development and protect the environment,also maintain a normal level of carbon emission.The main purpose of this paper is to decompose the important factors that affect carbon dioxide emissions based on STIRPAT model and EKC model,and make empirical analysis by focusing on the research of the G20 about C02 emissions,GDP per capita,population size,carbon intensity,ageing population rate,urbanization level and trade openness,considering the estimated coefficients of sample data and heterogeneity due to group differences and timeliness,providing empirical basis for feasible policies.Firstly,the paper makes statistical descriptions on the panel data,outlines each economic indicators,and then divided G20 countries into two groups:developing countries and developed countries,explaining variables' statistical differences,making group comparison and analysis.According to STIRPAT model and Environmental Kuznets Curve(EKC),we build the regression model and make assumptions about the relation between carbon dioxide emissions and population size,GDP per capita,technical level,the proportion of aging population,urbanization and trade openness,by using static panel data model and dynamic panel method,we quantify the various relationship among influencing factors and verify whether the panel data is in line with the inverted-U shape Environmental Kuznets Curve.The empirical results are:(1)The relationship between C02 emission and affluence of both the integral and grouped data of G20 are in line with inverted-U shape EKC,and haven' t reached the turning point yet,indicating that with GDP per capita increasing,the C02 emission goes up;(2)In static model,population scale,urbanization level,GDP per capita are the most major influencing factors of integral panel data and developing countries group and developed countries group respectively;(3)As for dynamic model,carbon dioxide emissions of the last period is highly positively related with current carbon dioxide emissions,integral and grouped data also fit inverted-U shape EKC.Urbanization and aging population rate have impacts on carbon dioxide emissions but not significant,while GDP per capita,population size,carbon intensity and trade openness have significant impact on C02 emissions.In addition,GDP per capita is the biggest driving force for increasing C02 emissions,carbon intensity is the most influential factor for decreasing C02 emissions.At last,based on previous results,the paper put forward some feasible suggestions:(1)Make emphasis on developing new energy,lower carbon intensity and improving technique level;(2)Control population scale,enhance citizen' s environmentally-friendly consumption awareness;(3)Developing countries should actively upgrade the industrial structure,developed countries should review their carbon calculation standards,carry out low-carbon production and provide technical and financial support to developing countries;(5)To strengthen international cooperation,and nations contribute independently and autonomously.