关键词: CO2净排放, 显示性比较优势指数, 时空演变, 变异系数

Abstract:

For an in-depth research on the current situation and developmental trend of China's CO₂ emissions, this article employed the revealed comparative advantage theory to carry out an analysis of the spatial framework and time-evolution regulations of net CO₂ emission. The analysis focuses on the net CO₂ emission per capita and unit GDP covering from 2005 and 2010 in China's six major regions (North, Northeast, East, Central South, Southwest, Northwest of China) and 29 provinces (excluding Hong Kong, Macro, Taiwan, Tibet and Xinjiang). In the calculation of CO₂ emission, net CO₂ emission (the absorption by the forest already deducted) were used as the basic data under the full consideration of the efficiency differentiation of energy conversion into CO₂ in different provinces in different years(In this way, the obtained net CO₂ emission were more accuracy).The difference in net CO₂ emissions per capita and unit GDP among different regions and provinces from 2005 to 2010 were studied and the driving mechanisms for this difference are analyzed by introducing one analytical method---coefficient of variation. The results showed that the difference of per capita carbon dioxide among regions became smaller, the value for North and Northeast China were higher and the value for Southwest of China was lower. In the case of CO₂ emission of unit GDP, the regional difference became more equalized. For instance, Central South and East of China displayed low amount, while Northwest, North, Northeast, Southwest of China revealed high amount, especially Northwest region showed the highest amount. The difference of per capita net CO₂ emission among provinces revealed a "shock" trend, but the trend showed a slightly decreased in general. Considering the per capita CO₂ emission, Ningxia and Inner Mongolia was the biggest; Jiangxi, Hainan, Yunnan, Guangxi, Anhui is comparatively smallest; and Beijing, Heilongjiang, Shanghai decreased obviously, while Shanxi, Chongqing increased sharply. The difference in net CO₂ emission of per unit GDP among provinces became smaller from 2005 to 2010. Net CO₂ emission of per unit GDP in Ningxia, Guizhou, Shanxi produced more, while Beijing, Tianjin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Guangdong, Guangxi, Yunnan produced less. The trend in Jilin Province decreased, meanwhile Hainan Province increased obviously.

Key words: net emissions of CO2, revealed comparative advantage index, spatial and temporal evolution, variation coefficient