Comprehensive Analysis on Carbon Emission Efficiency of Urban Residential Building Renovation

A series of environmental problems caused by global warming seriously threaten the survival and development of mankind. Greenhouse gas emissions, mainly carbon emissions, are the key factors that aggravate this problem. The construction sector is one of the three key carbon emission sources. With the rapid progress of global urbanization, the carbon emissions related to urban residential buildings continue to rise, and improving its carbon emission efficiency is of decisive significance to control the total global carbon emissions. As the largest carbon emitter in the world, it is very important for China to strengthen carbon emission reduction in the construction field. Therefore, it is particularly urgent to explore ways to improve the carbon emission efficiency of urban residential buildings in China. On the basis of summarizing the existing research results of carbon emission efficiency measurement, building carbon emission measurement and influencing factors of building carbon emission at home and abroad, this study established an evaluation model of carbon emission efficiency of residential buildings based on super-efficiency SBM(slack-based measure) method, and selected energy consumption and carbon dioxide emission (unexpected output) of residential buildings as input variables, and resident population, residential building area and per capita disposable income as output variables. Based on the panel data of 13 cities in Beijing, Tianjin and Hebei from 2010 to 2021, the carbon emission efficiency and influencing factors of Beijing, Tianjin and Hebei urban agglomeration were measured and analyzed by using SBM directional distance function and Tobit model. It is found that the carbon emission efficiency of Beijing-Tianjin-Hebei region did not reach the ideal level during the sample period, and there was obvious multipolarization phenomenon.