Research on Optimization of Low-carbon Eco-city Indicator System in China from International Comparison PerspectiveJingmei Shao, Wenhao Li, Yan Long, Fangqiao Wei, Siyu Hu, Tingting Guo and Xiangjun PuE3S Web Conf., 625 (2025) 01013DOI: https://doi.org/10.1051/e3sconf/202562501013