Research On The Regional Differences And Influencing Factors Of CO₂ Emission In China’s Construction Industry

Under the background of increasing global greenhouse effect,how to reduce carbon dioxide emissions and achieve the sustainable development of economic and social has become a hot topic of concern.Comprehensive Work Plan for Energy Conservation and Emissions Reduction in the 13^th Five-Year Plan issued by the State Council in 2016proposed that the target of carbon emission reduction should be put into all provinces,and each province should share the task among the sectors according to the reality.The construction industry has the characteristics of high energy consumption,high emissions and low energy efficiency,and carbon emission reduction potential of construction industry is huge.It is of great practical significance to research on this issue for China to realize the target of energy saving and emission reduction as soon as possible.However,compared with industry and manufacturing industry,academic circles pay less attention to it.At present,there are a few literatures on regional differences and influencing factors of construction industry carbon dioxide emissions in China.Therefore,based on the provincial panel data of China from 1997 to 2015,this paper uses statistical expertise to study the regional distribution characteristics and influencing factors of carbon dioxide emissions in China’s construction industry.It is expected that this research can help provinces better understand their own carbon emission status of construction industry,and provide a scientific basis for relevant departments to formulate differentiated construction industry carbon emission reduction policies.The research contents of this paper are arranged as follows:The introduction introduces the research background,the status of domestic and foreign scholars on carbon emissions of construction industry and the innovation points of this paper;Chapter 2analyses carbon dioxide emissions and its influencing factors in China’s construction industry from both national and provincial aspects through descriptive statistics;Chapter3 uses Dagum Gini coefficient and Kernel density estimation method to study regional differences and dynamic evolution of carbon emissions from construction industry.Chapter 4 extends the STIRPAT model and uses the semiparametric additive regression panel model to empirically analyze the linear and nonlinear effects of influencing factors on carbon dioxide emissions in China’s construction industry.Chapter 5 introduces quantiles into the extended STIRPAT model and analyze the impact of influencing factors in different quantiles.Chapter 6 uses threshold regression model to empirically examine the threshold effect of China’s economic development on carbon emissions from construction industry.Finally,based on the summary of the main research results,the corresponding policy suggestions are put forward.The main conclusions of this paper are summarized as follows:（1）The main source of regional differences in carbon emissions of China’s construction industry is inter-regional differences.The relative differences first increase and then decrease,and the absolute differences decrease year by year.（2）The linear effects of population size,economic growth,energy consumption structure and industrial scale on carbon emissions of construction industry are positive,while the linear effect of energy efficiency is negative.（3）The non-linear effects of economic growth and energy consumption structure on carbon emissions of construction industry have"N-shaped"patterns;and population size follows"U-shaped"pattern;while energy efficiency and industrial scale have inverted"U-shaped"patterns.（4）Population size has a greater impact on provinces which in the 0.50-0.75 quantile of carbon dioxide emissions in China’s construction industry;economic growth has a greater impact on provinces which in the 0.10-0.25quantile;energy structure has a greater impact on provinces which in the 0.25-0.50 and0.50-0.75 quantile;industry size has a greater impact on provinces which in the upper0.90 quantile;energy efficiency has a weaker negative impact on provinces which in the upper 0.90 quantile of carbon dioxide emissions in China’s construction industry.（5）Economic growth has a significant double threshold effect on carbon emissions of construction industry,and its effect intensity increases first and then decreases with the economic level crossing the two thresholds.