低碳交通与区域经济的协同发展对区域可持续发展至关重要。本研究构建了两者的指标体系，运用熵值法、耦合协调模型及核密度估计，分析其发展水平及耦合协调状态的时空演变特征。以2014-2023年山东省低碳交通与区域经济的面板数据为例，研究结果表明：山东省低碳交通与区域经济的耦合协调发展水平呈平稳上升趋势，低碳交通综合指数除2017年低于区域经济综合指数外，其余年份均高于区域经济综合指数。区域经济综合指数增长幅度最为显著；山东省各地市低碳交通与区域经济耦合协调均呈稳步提升态势，总体呈现东部沿海地区协调度较高，向中西部及南部地区梯度递减的空间分布特征，区域发展存在不均衡性；至2023年，山东省各地区均达到中度协调及以上水平，部分处于中度协调阶段的地区其耦合协调度已接近良好协调阶段。

The coordinated development of low-carbon transportation and the regional economy is crucial for regional sustainable development. This study constructs an indicator system for both, and employs the entropy method, the coupling coordination model, and kernel density estimation to analyze the spatiotemporal evolution characteristics of their development levels and coupling coordination status. Taking panel data from Shandong Province from 2014 to 2023 as an example, the results show that the coupling coordination development level of low-carbon transportation and the regional economy in Shandong Province exhibits a steady upward trend. Except for 2017 when the comprehensive index of low-carbon transportation was lower than that of the regional economy, it was higher than the comprehensive index of the regional economy in all other years. The growth rate of the comprehensive index of the regional economy is the most significant. The coupling coordination between low-carbon transportation and the regional economy in various cities of Shandong Province shows a steady improvement trend. Overall, there is a spatial distribution characteristic of higher coordination in the eastern coastal areas, with a gradient decreasing towards the central, western, and southern regions, indicating regional development imbalance. By 2023, all regions in Shandong Province have reached at least a moderate coordination level, and the coupling coordination degree of some areas in the moderate coordination stage is already close to the good coordination stage.