Research on the spatial-temporal evolution pattern of China's industrial carbon emission efficiency-based on the super-efficiency SBM model

This paper uses the super efficiency SBM model based on unexpected output to calculate industrial carbon emission of 30 provinces in China from 2005 2019, and spatial autocorrelation other methods conduct an empirical analysis dynamic evolution process temporal differences efficiency. The results show that China's is still low stage, with average value 0.34. In study period, although overall trend rising, between are obvious. Moran's I index subject impact social policy environment time path, showing "M" type fluctuation trend, its difference characteristics change stages. At same time, there a significant global agglomeration effect across country, dependency provinces. significant, forming cluster eastern coastal area as high center, northwest inland center. Getis OrdGI * reveals local always maintain pattern "hot east cold west", which echoes China. hot spots sub mainly concentrated southeast areas relatively superior economic development, present "semi enclosed" pattern. Cold spot gradually evolved into "suppression" dominated by China, comprehensively suppressing spots. conducts all-round evaluation perspective regional differentiation, deeply studies efficien cy various It crucial achieve goal reduction has important practical significance.