Analysis of China's Carbon Emissions Base on Carbon Flow in Four Main Sectors: 2000-2013

Reducing carbon emissions is a major way to achieve green development and sustainability for China's future. This paper elaborates the detailed features of China's carbon flow for 2013 with the carbon flow chart and shows the changing characteristics of China's CO2 flow from the viewpoint of specific sectors and energies from 2000 and 2013. The results show that (1) from 2000 to 2013, China's CO2 emissions approximately grew by 9% annually, while the CO2 intensity of China diminished at different rates. (2) The CO2 emissions from the secondary industry are prominent from the perspective of four main sectors, accounting for 83.5% of emissions. Manufacturing plays an important part in the secondary industry with 45% of the emissions, in which the "smelting and pressing of metal" takes up a large percentage of about 50% of the emissions from manufacturing. (3) The CO2 emissions produced by coal consumption are dominant in energy-related emissions with a contribution of 65%, which will decrease in the future. (4) From the aspect of different sectors, the CO2 emissions mainly come from the "electricity and heating" sector and the "smelting, pressing and manufacturing of metals" sub-sector. It is essential and urgent to propose concrete recommendations for CO2 emissions mitigation. Firstly, the progression of creative technology is inevitable and undeniable. Secondly, the government should make different CO2 emissions reduction policies among different sectors. For example, the process emissions play an important role in "non-metallic minerals" while in "smelting and manufacturing of metals" it is energy emissions. Thirdly, the country can change the energy structure and promote renewable energy that is powered by wind or other low-carbon energy sources. Alternatively, coke oven gas can be a feasible substitution. Finally, policy makers should be aware that the emissions from residents have been growing at a fast rate. It is effective to involve the public in energy conservation and carbon emissions reduction, such as reducing the time of personal transportation.