The green development of Chongqing municipality is crucial in establishing a major ecological shield in the upper reaches of the Yangtze River. By developing a Super-SBM model and using the Malmquist index to analyze and calculate the green development efficiency and its influencing factors in Chongqing from 2011 to 2021, this study reveals an accelerating trend in the overall green development efficiency in Chongqing. The significant enhancement of green development efficiency in Chongqing is primarily attributed to changes in returns to scale. Pure technical efficiency and technological advancements have a considerable potential impact on improving green development efficiency in Chongqing. Furthermore, there are discernible disparities in green development efficiency among districts and counties in Chongqing, with different factors influencing these variations. Chongqing is suggested to promote clean and efficient energy utilization, bolster the application and commercialization of scientific and technological advancements, consistently advance ecological restoration and management, and elevate the quality of green development to a higher level.





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