[Realizing Green Synergistic Development in the Yangtze River Economic Belt： A Quantitative Analysis Based on the Synergistic Effect of Regional Reduction of Pollution and Carbon Emissions].

Making coordinated efforts to reduce pollution and carbon emissions is not only an effective way to cope with climate change and solve the pollution problem but also the primary tool to promote comprehensive green transformation. Based on synergistic theory and the concept of green development， this study systematically considers the synergistic effects of various elements across economic， resource， and environmental dimensions. It constructs an Economic Resource-Pollution Reduction-Carbon Reduction index system to quantitatively assess the synergistic effects of pollution and carbon reduction in the Yangtze River Economic Belt. Utilizing empirical data from multiple levels， including the Belt as a whole， regions， and cities， the study analyzes the synergistic development of regional reduction of pollution and carbon emissions and proposes future paths and effective solutions for the synergistic development of pollution and carbon reduction. The results showed that： the process of synergistic development of pollution and carbon reductions in the Yangtze River Economic Belt started to show good development in 2017 and reached a medium level of synergism in 2020. The upper， middle， and lower reaches of the Yangtze River Basin have achieved significant progress in ecological protection and high-quality development， which was closely linked to national policies and regional strategies. At the urban level of the Yangtze River Economic Belt， the synergy of pollution and carbon reductions in each city from 2006 to 2021 generally exhibited a U-shaped development trend over time， showing a "high-low" two-gradient spatial distribution pattern from east to west. The practice of "ecological priority and green development" of the Yangtze River Economic Belt has demonstrated to the world that low-carbon development and green development can become a new engine for economic growth and ultimately achieve a win-win situation for the economy， society， and the environment.