Study On Carbon Emission Of Construction Industry Based On System Dynamics

As the climate crisis of global warming intensifies,governments around the world take more active measures to reduce carbon emissions.At present,China is the country with the highest carbon emissions in the world,which has seriously affected the domestic climate and environment.The Chinese government has to take a series of measures to curb carbon emissions.This requires all sectors of the country to set more stringent carbon emission reduction targets and increase the intensity of carbon emission reduction.The construction industry is the key industry to implement the carbon emission reduction policy.Although the direct carbon emissions generated by the construction industry's own production activities are not high,the indirect carbon emissions caused by a large number of building materials consumed by the construction industry are huge.In order to achieve the goal of carbon emission reduction in China,it is necessary to measure the direct and indirect carbon emissions of the construction industry,so as to put forward feasible carbon emission reduction policies of the construction industry.Based on the macro perspective of the whole construction industry,this paper first establishes the concept and composition of carbon emissions in the construction industry(mainly including direct carbon emissions and indirect carbon emissions);secondly,based on the relevant statistical data of China's construction industry,using the carbon emission coefficient method,it establishes the calculation model of carbon emissions inthe construction industry,and obtains the data of carbon emissions in the construction industry in 2005-2017;secondly,it combines domestic and foreign carbon emissions Based on the research results of relevant literature on the influencing factors of carbon emission in the construction industry,the total population,GDP,industrial structure,energy structure and other influencing indicators are selected as the influencing factors of carbon emission in the construction industry.Finally,the model is verified by combining the early calculation data of carbon emission in construction industry.At the same time,this paper also verifies the effectiveness of the model by setting the low energy consumption,medium energy consumption and high energy consumption Three different scenarios are analyzed to predict the carbon emissions of the construction industry,and the trend chart and simulation value of the carbon emissions of the construction industry from 2017 to 2025 are obtained.The results show that indirect carbon emission accounts for more than 90% of the total carbon emission of the construction industry,which is the main source of the carbon emission of the construction industry.Although the direct carbon emission of the construction industry has been on the rise with the rapid development of the construction industry,the direct carbon emission of the construction industry can be effectively controlled through the adjustment and control of GDP,energy structure,production structure and investment in scientific and technological innovation.