Research On Carbon Productivity Of Construction Industry In Beijing-Tianjin-Hebei Region

Although the construction industry has played an important role in promoting the development of China’s national economy,its extensive development model has caused serious pollution to the environment.Under the “new normal” of economy,economic development and carbon emissions control have become a hot national issue.Carbon productivity,an indicator which contains the two requirements,can better reflect the economic benefits of unit carbon equivalent emissions.Therefore,raising carbon productivity is not only related to the development of China’s low-carbon economy,but also a powerful measure to reduce global Greenhouse Effect.As one of the key development areas in China,the Beijing-Tianjin-Hebei region has witnessed explosive growth in the process of rapid urbanization.So it is significant to study the carbon productivity change of its construction industry.On one hand,it can reflect the low carbon development level of the construction industry in this region.On the other hand,suggestions on the country’s development of low-carbon economy can be put forward to provide the scientific and reasonable basis for the realization of the low-carbon economic development.This article is based on carbon productivity,and the influence factors of carbon productivity change in the construction industry in the Beijing-Tianjin-Hebei region have been studied.After the factor decomposition,a dynamic model of carbon productivity system is built to explore more internal mechanism of carbon productivity changes.What’s more,different scenarios are considered in the dynamic model,and suggestions on the low-carbon development of the construction industry in the Beijing-Tianjin-Hebei region have also been put forward.The research contents of this paper are as follows:Firstly,for calculating carbon productivity of the construction industry in the Beijing-Tianjin-Hebei region,the IPCC carbon emission coefficient method is adopted at the beginning of this article.What’s more,the Logarithmic Mean Divisia Index(LMDI)is used to build a carbon productivity factor decomposition model,which can quantitatively and deeply analyze the impact of energy utilization efficiency,carbon emission region structure,carbon emission energy consumption and other factors on the carbon productivity of the construction industry from 2004 to 2017.Secondly,based on the LMDI decomposition and combining the characteristics of the construction industry,Vensim-PLE is used to construct the system dynamics model of carbon productivity.In this model,the carbon productivity system is divided into the economic subsystem,the environmental subsystem,the population subsystem and the energy subsystem.The validity of the model is tested by historical test.Finally,three scenarios for the development of the construction industry carbon productivity in the Beijing-Tianjin-Hebei region in 2030 are set scientifically after the test,and the development potential of the low-carbon economy in the construction industry in the Beijing-Tianjin-Hebei region from 2018 to 2030 is analyzed.In addition,aiming at the factors influencing the carbon productivity system of the construction industry and combined with the characteristics of the Beijing-Tianjin-Hebei region,this paper puts forward policy suggestions to promote the low-carbon economic development of the construction industry in the Beijing-Tianjin-Hebei region from transforming the economic development model,optimizing the energy consumption structure of the construction industry,promoting the upgrading of building materials technology,increasing investment in science and technology,developing green buildings and others aspects.