我国煤炭绿色发展效率的时空分异及演化特征OACHSSCD

Comprehensively improving the efficiency of green development is the main task for the high-quality development of the coal industry of China,and addressing prominent problems such as the over-all low green development efficiency and uneven regional green development level in the coal industry is the key lever to accelerate the energy revolution and the"dual carbon"strategic process.Based on the panel data of the coal industry in 15 provinces in China's coal-rich areas from 2008 to 2020,a su-per-efficient SBM-GML model and an exploratory spatial data analysis model considering the charac-teristics of undesirable output and green coal green production were constructed to measure the green development efficiency and green total factor productivity of the coal industry,and the spatial pattern and spatiotemporal evolution process of the green development efficiency of China's coal industry were analyzed and described from the six-dimensional cross-sections of industry and region,static and dy-namic,time and space..The results indicate:During the inspection period,the green development effi-ciency of the coal industry showed a fluctuating upward trend,with a growth rate of over 37％and a relatively low overall average of 0.646;There are significant spatial differences in the green develop-ment efficiency of the China's coal-rich areas,and the spatial evolution is manifested as a gradually decreasing spatial pattern from the western region to the northeast region,the central region and the eastern region.The spatial evolution has a significant positive corr-elation,and the green development efficiency of the coal industry in adjacent provinces has a spatial dependence,with a slow growth trend in geographical agglomeration.Local agglomeration evolution mainly manifests as high-high agglomera-tion(H-H),low-high agglomeration(L-H)and low-low agglomeration(L-L),with spatial differ-ences showing a gradual weakening trend and obvious"Matthew Effect";The green total factor produc-tivity of the coal industry also shows a growth trend,with an average increase of 5.9％in green total factor productivity and an average annual growth rate of 3.7％.The improvement of green total factor productivity in the coal industry mainly comes from technological progress,which can offset the negative impact caused by low technological efficiency.