关键词: 碳排放效率, 区域一体化, 产业结构, 财政支出规模, 空间效应分解

Abstract: Based on the data of 30 provinces in China except Tibet, Taiwan Province, Hong Kong and Macao Special Administrative Regions from 2003 to 2019, this paper uses the Super SBM model with unexpected output to measure the carbon emission efficiency of each province, constructs the comprehensive level indicator of regional integration by making use of the integration level of the commodity markets, the labor markets and the financial markets, and analyzes the impact of regional integration, industrial structure advancement, fiscal expenditure scale and the interaction between regional integration and the latter two on carbon emissions efficiency and its spatial effect. The findings show that regional integration is conducive to improving carbon emission efficiency, and this effect will be positively regulated by the advancement of industrial structure and negatively regulated by the scale of financial expenditure; the advancement of industrial structure is conducive to improving carbon emission efficiency, while the expansion of financial expenditure is not conducive to improving carbon emission efficiency, if the level of industrial structure is too low or the scale of financial expenditure is too large, there is a sub optimal strategy to improve carbon emission efficiency by reducing the level of regional integration; regional integration can promote the carbon emission efficiency of adjacent provinces, but this spillover effect is also subject to the positive regulation of industrial structure advancement and the negative regulation of fiscal expenditure scale. Therefore, we should continue to promote the upgrading of industrial structure to ensure and strengthen the role of regional integration in promoting carbon emission efficiency. While stimulating the vitality of market players, the government should also be proactive and promising, allocate more financial expenditure in environmental protection investment, focus on cultivating local competitive industries, and actively implement the regional integration strategy. And the carbon emission policy must focus on regional coordinated development.

Key words: carbon emission efficiency, regional integration, industrial structure, fiscal expenditure scale, spatial effect decomposition