Spatio-Temporal Pattern Changes of Chinese Provincial Carbon Dioxide Emission Efficiency

Abstract

Based on the SBM model of undesirable output, the Chinese provincial carbon dioxide emission efficiency in 2007 and 2012 was measured. The global spatial autocorrelation moran’s I index, local spatial autocorrelation moran’s I index and local spatial correlation index were used to analyze the spatial distribution characteristics and evolution pattern of carbon dioxide emission efficiency. The results show that: The energy efficiency index of China’s provinces is above moderate level, and the provinces with high carbon efficiency are Beijing, Tianjin, Jiangsu and Fujian. The middle efficient provinces are Shanxi, Anhui, Hunan, Hubei and other middle reaches of the Yangtze River region, the efficiency of the northwest region is generally low; the carbon emission efficiency of China shows a significant accumulation of HH and LL on the inter-provincial scale. The high agglomeration areas are mainly distributed in the eastern and southern provinces, and the low and low agglomeration areas are mainly distributed in the northwest and middle reaches of the Yellow River; The trend of increasing the efficiency of local spatial correlation and the evolution of global spatial pattern correspond to each other, specifically for the high concentration of hot spots and low concentration of cold spots were gathered in the east and northwest regions, thus the initial formation of the East China region as the center and the northwest provinces as the center of the outward diffusion of the spatial structure.