The Dynamics and Trends of International Research on Urban Carbon Risk

Research on Urban Carbon Risk (RUCR) is crucial for understanding the impact mechanisms of carbon emissions on urban environments and health, particularly in rapidly urbanizing areas. This paper conducted a bibliometric analysis of 2012 studies on RUCR indexed in the Web of Science (WOS) database from 1991 to June 2023. It reached the following conclusions: (1) The annual publication volume of RUCR has steadily increased since 2005, mainly focusing on environmental science and public health. A co-citation analysis of the literature indicates that RUCR research content is centered on carbon sink assessment, risk factor analysis, and response strategies. (2) RUCR has undergone four developmental stages: singular exploration, evaluation and construction, innovative breakthroughs, and technological synergy. (3) The key research issues of RUCR include carbon reduction and sink enhancement, integrating qualitative and quantitative planning methods, and multidisciplinary collaboration. (4) Current research hotspots in RUCR focus on urban pollution and health risks, ecological environment and land use change, carbon emissions and energy utilization, and pollution monitoring technologies. Future research trends are anticipated to center on source apportionment and monitoring of carbon emissions, the relationship between air pollution and health risks, and the governance and mitigation of carbon emissions. (5) Based on the analysis of critical issues and trends, it is recommended that future research prioritize spatial identification and scenario simulation of urban carbon risk. The conclusions of this paper facilitate researchers’ quick understanding of the current status and development trends of RUCR and propose future research directions from urban planning.