Promoting the efficient synergy between low-carbon economy and high-quality development is of great significance for achieving the "dual carbon" strategy on schedule. Taking the panel data from 13 cities of the Beijing-Tianjin-Hebei urban agglomeration from 2006 to 2021 as the research subjects, the coupling coordination degree model, panel vector autoregressive model, and factor analysis model were constructed to explore the spatial and temporal differentiation and driving mechanism of coupling and coordination between low-carbon economy and high-quality development. The results showed that： ① From a temporal perspective, the degree of coupling and coordination in the Beijing-Tianjin-Hebei urban agglomeration had been slowly increasing but remained in a state of mild imbalance. From a spatial perspective, the synergistic effect formed a typical 'core-sphere' structure with Beijing and Tianjin as the core. ② There was a synergistic effect between low-carbon economy and high-quality development, but this effect had a certain lag and would gradually weaken in the long run. ③ From the perspective of the driving force, the role of economic development and resource utilization was significantly stronger than that of scientific and technological innovation. Although the overall driving force during the study period was constantly improving, there was still a big gap in spatial distribution, and it is necessary to strengthen the role of driving force according to local conditions.
Keywords: Beijing-Tianjin-Hebei urban agglomeration; high-quality development; low-carbon economy; synergistic effect; “dual-carbon” strategy.