Research On Input-output Issues Of China’s Embodied CO₂ Emissions

Since the start of the industrial age, carbon dioxide (CO2) emissions in atmospheric from the burning of fossil fuels (coal, oil, petroleum and natural gas) is generally regarded as a primary anthropogenic contributor to global climate change. China is now one of the world’s largest emitters of atmospheric CO2. Analysis and research on the issue of China’s CO2 emissions caused by energy consumption, and put forward effective energy conservation and emissions reduction plan suitable for China’s national conditions, is not olny release the pressure from its own emissions but also is a responsibility and oblgation to global climate change. Embodied CO2 emissions casued byenergy consumption have become an important issu to be solved urgently in China.Based on the input-output analysis method, combined with other energy and environment related analysis and modeling method, this article mainly studes the circulation of CO2 caused by energy consumption embodied in goods in the industry department in the process of economic activities. A complex complete decomposition analysis model is established to analysis and research on the fourteen effect factors including import on the impact of China’s CO2 emissions change. From the perspective of industry and energy, respectively, the artical analysis the effect of different kinds of energy on total change and emission intensity change of CO2 under the effect of different factors. Direct and indirect impact of energy price change on China’s CO2 intensity are calculated and analyzed. Energy price model is established to analysis the impact of energy price increase on price of other departments and general price level in China.Through analysis, we find that:The supply chain with the largest impact was the path from metal smelting to exports, whether directly or indirectly. Supply chain with one order having the largest impact on emissions is "Chemical industry → exports". Through import-export trade, China bears the enormous pressure of CO2 emissions for the rest of the world, especially the developed countries. The main factors that increase and decrease China’s CO2 emissions are the effect of level of export and level of energy intensity respectively. Import substitution has also played an important role in reducing industry CO2 emissions. Construction, Mechanical, electrical and electronic equipment manufacturing industry, Other Services and Chemical industry are the industry sectors that having the largest impact on CO2 emissions in China. There are mainly five factors affecting China’s CO2 emission intensity, namely gross domestic product (GDP), total factor productivity (TFP) on behalf of the technical level, proportion of industrial production (SS) on behalf of demand structure, energy price (EP) and average coefficient of CO2 emissions (EF). GDP, SS, EP’s impact on CO2 emissions intensity mainly come from their indirect influence by other factors. Each kind of energy price increase leads to seven general price index rise. The influence of electricity and heat price is the largest. Energy price controls has certain inhibitory effect on the rise of general price level.