Research On The Spatial Differences,Dynamic Evolution,and Influencing Factors Of Carbon Emission Efficiency In China’s Construction Industry

As the country with the highest carbon emissions in the world,whether China can achieve its "dual carbon" goals has become a focus of attention at home and abroad.The construction industry is an important pillar industry in China’s national economic development,but it is characterized by high energy consumption,high carbon emissions,and low efficiency.Therefore,it is urgent to balance the dual goals of sectoral economic development and carbon reduction.The essence of carbon emission efficiency is to minimize carbon emissions while pursuing maximum economic value.Therefore,improving carbon emission efficiency is a key measure to promote the sustainable development of the construction industry.However,existing researches rarely involve the exploration of carbon emission efficiency of the construction industry.Furthermore,China is geographically vast,and different regions have different resource endowments and levels of socio-economic development.As a result,there are significant differences in the technology level,energy consumption,and carbon emission level of the construction industry in different regions.The carbon emission efficiency in China’s construction industry exhibits obvious spatial nonequilibrium characteristics.To enhance the overall carbon emission efficiency in China’s construction industry and promote a low-carbon and coordinated development pattern,it is necessary to accurately measure the carbon emission efficiency level of the construction industry in different regions and analyze the spatial differences,dynamic evolution,and influencing factors of carbon emission efficiency in China’s construction industry.This article firstly applied the carbon emission coefficient method to calculate the carbon emissions of the construction industry in 30 provinces in China from 2005 to 2019 and treated it as non-desirable output.Based on the global reference Min DS model considering the undesired output,the carbon emission efficiency in each province’s construction industry was measured.Secondly,trend surface analysis,Dagum Gini coefficient and its decomposition,and spatial autocorrelation analysis were used to explore the spatial distribution pattern of carbon emission efficiency in construction industry,the sources and contributions of spatial differences,and spatial agglomeration modes.The dynamic evolution trend of carbon emission efficiency in construction industry was analyzed using kernel density estimation,traditional and spatial Markov chain analysis.Thirdly,the geographic detector was used to examine the explanatory power and interaction of various influencing factors on the spatial differences in carbon emission efficiency in construction industry.Finally,measures and suggestions were proposed to improve the carbon emission efficiency.The research results show that:(1)The total carbon emissions from China’s construction industry increased first,then decreased,and then increased again during the study period,with indirect carbon emissions accounting for over 90%.(2)The carbon emission efficiency in construction industry rises first and then fluctuates,with a decreasing feature of "east-middle-northeast-west".(3)Regional differences are the main source of spatial differences in carbon emission efficiency,with the largest differences within the eastern region and the largest differences between the eastern and western regions.Carbon emission efficiency has a significant positive spatial correlation,with H-H agglomeration types concentrated in the eastern coastal areas and L-L agglomeration types mainly in the northwest and northeast regions.(4)Polarization phenomena appeared in some years for the whole country and the four major regions.The state transition of carbon emission efficiency was difficult to achieve leapfrog transition,and the efficiency level of adjacent provinces would affect the state transition of the local province’s efficiency level.(5)The explanatory power of various factors in explaining the spatial differences in carbon emission efficiency in construction industry is ranked in order of enterprise scale,level of openness,level of economic development,degree of industrial development,level of innovation,and energy consumption structure,and the interaction intensity between factors is greater than the single-factor intensity.This thesis has further enriched the relevant contents of the research on the carbon emission efficiency in construction industry,and the research results can provide theoretical support and practical reference for the collaborative improvement of carbon emission efficiency in China’s construction industry.This thesis includes 28 figures,26 tables,and 160 references.