Where do China's carbon dioxide emissions mainly come from?

Carbon dioxide, as one of the most important greenhouse gases (accounting for more than 80% of the total emissions), mainly comes from the combustion of fossil fuels, and is closely related to the production and utilization of energy. 2005, China's primary energy consumption was 2.2 billion tons of standard coal, of which the proportion of coal, oil, gas and hydropower was 68.7%, 21.2%, 2.8% and 7.3% respectively. The estimated carbon dioxide emissions were 5.1 billion tons, of which about 50% came from the energy processing and conversion sector (mainly electricity), about 35% came from the terminal industrial sector, and about 15% came from agriculture, transportation, services and residential life.?

China's carbon dioxide emissions have the following three characteristics: the total amount of emissions. 2005 China's carbon dioxide emissions accounted for 18% of the world's total, ranking second in the world, second only to the United States; per capita carbon dioxide emissions are low. 2005 China's per capita carbon dioxide emissions of about 3.9 tons, lower than the world's average level of 4.2 tons, less than the average per capita carbon dioxide emissions of OECD countries ( 11 tons) 2/5; per capita carbon dioxide emissions. 11 tons) of 2/5; high intensity of carbon dioxide emissions.

In 2005, China's carbon dioxide emissions intensity of about 2.7kg/USD (at constant 2000 prices), which is 3.5 times the world average, 6 times the average level of OECD countries. This is caused by a variety of reasons: (1) the uncertainty of the exchange rate ratio. (2) High energy intensity of industry, industry and product structure. In the GDP composition of China's industry accounts for a high proportion, the proportion of the service sector is low, and high energy-consuming industries account for a large proportion of the industry, in addition to China's high technology, high value-added products accounted for a small proportion. (3) Energy conversion and utilization efficiency is low. (4) Primary energy consumption is dominated by coal.