Spatiotemporal dynamics and influencing factors of CO2 emissions under regional collaboration: Evidence from the Beijing-Tianjin-Hebei region in China

Against the backdrop of global climate change and the "dual carbon " target, cities have a significant responsibility to achieve carbon reduction targets. As a crucial urban agglomeration in northern China, effectively balancing economic growth with CO 2 emission reduction to achieve high -quality economic development remains a significant challenge that the Beijing -Tianjin -Hebei region should address both presently and in the future. The objective of this study is to utilize nighttime lighting data and energy consumption information to quantify the CO 2 emissions of diverse cities within the Beijing -Tianjin -Hebei region spanning from 2006 to 2020. The research aims to analyze the spatial progression patterns of CO 2 emissions across these urban centers, identify key determinants and their interrelations, and delve into the underlying mechanisms pivotal for advancing carbon mitigation strategies within urban agglomerations. The results indicate that: with an exception in Beijing where CO 2 emissions slightly decreased compared to 2006, CO 2 emissions increased across cities in the Beijing -TianjinHebei region by 2020. High -value CO 2 emission areas are primarily concentrated in central of the study area, exhibiting negative spatial correlation characteristics. Based on its urban development positioning, it is imperative for the Beijing -Tianjin -Hebei urban agglomeration to formulate and implement carbon reduction strategies on innovative development, industrial upgrading, and ecological protection among other aspects towards coordinated low -carbon development.