| The accounting of provincial CO2 emissions can determine the main contributors to CO2 emissions and provide relevant information for CO2 emission reduction decisions. Previous studies have shown that different accounting perspectives often lead to different levels of CO2 emission. On the basis of the multi-regional input-output analysis framework, considering different energy types and separately quantifying China's provincial CO2 emissions driven by production, demand, and supply, an energy-carbon emission relationship model was established to promote the comprehensive analysis of CO2 emissions in China. The results showed that:① the CO2 emissions caused by coal accounted for 57.2% (production perspective), 60.7% (consumption perspective), and 58.2% (income perspective). ② Among the industrial sectors, the CO2 emissions from the production and supply sectors of electricity, heat, gas, and water accounted for 49.1% (production perspective), 70.2% (consumption perspective), and 14.2% (income perspective). ③ CO2 emission reduction policies in highly industrialized provinces such as Hebei, Inner Mongolia, Henan, and Liaoning should focus on the production side. The policies of the developed eastern coastal provinces and the provinces rich in mineral resources should focus on the demand side and the supply side, respectively. ④ The tertiary industry, which has been neglected in the past, contributed a lot of CO2 emissions from the perspective of income. Therefore, the provinces and industrial departments need to formulate differentiated and targeted CO2 reduction policies on the supply, demand, and production sides to reduce CO2 emissions and achieve the carbon peak and carbon neutralization goals. |
