Regression analysis results of Tobit model.

Nowadays, China insists on the strategy of ecological priority and green development, and the Yangtze River Economic Belt is a pioneering demonstration belt for the construction of ecological civilization in China. Promoting industrial ecological efficiency is of great significance to Chinese sustainable development and high-quality economic development. Based on the provincial panel data of 11 provinces and cities in the Yangtze River Economic Belt region from 2011 to 2020, we use the super-efficient slacks-based measure of efficiency SBM model to measure the industrial eco-efficiency of the Yangtze River Economic Belt, reveal the spatial differences in industrial eco-efficiency of different provincial units, and explore the industrial eco-efficiency. The results show that: (1) from the perspective of the Yangtze River Economic Belt as a whole, industrial eco-efficiency is on a stable upward trend, but the efficiency level is not high, and there is more room for improvement; (2) in terms of the spatial distribution of industrial eco-efficiency in the Yangtze River Economic Belt, there are significant differences, with industrial eco-efficiency in the downstream region being higher than that in the midstream region and the upstream region, and the lowest in the midstream region, while in terms of the spatial distribution pattern, the industrial eco-efficiency of 11 provinces and cities in the Yangtze River Economic Belt eco-efficiency has a significant positive spatial autocorrelation; (3) in terms of influencing factors, economic development level, factor endowment, and foreign investment can significantly influence industrial eco-efficiency in the Yangtze River Economic Belt. The study’s result helps provide theoretical guidance and practical reference for promoting the green and ecological development of industries in the Yangtze River Economic Belt.当前，中国坚持生态优先、绿色发展战略，长江经济带是我国生态文明建设的先行示范带。提升产业生态效率，对我国可持续发展与经济高质量发展具有重要意义。本研究基于长江经济带11个省市2011-2020年的省级面板数据，采用超效率基于松弛的测度（super-efficient slacks-based measure, SBM）模型对长江经济带产业生态效率进行测算，揭示不同省级单元产业生态效率的空间差异，并对产业生态效率展开探究。研究结果显示：其一，从长江经济带整体层面来看，产业生态效率呈稳步上升态势，但效率水平仍偏低，尚有较大提升空间；其二，长江经济带产业生态效率空间分布差异显著，下游地区产业生态效率高于中上游地区，中游地区效率最低；从空间分布格局来看，长江经济带11个省市的产业生态效率存在显著的正向空间自相关性；其三，就影响因素而言，经济发展水平、要素禀赋与外商投资均对长江经济带产业生态效率具有显著影响。本研究成果可为推动长江经济带产业绿色生态发展提供理论指引与实践参考。