School of Water Conservancy and Hydropower Engineering, North China Electric Power University, Beijing 102206, China; Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
J Environ Manage. 2023 Jan 15;326(Pt B):116715. doi: 10.1016/j.jenvman.2022.116715. Epub 2022 Nov 17.
The increasing environmental pressure of anthropogenic CO emissions is impeding the sustainability of urban agglomerations (UAs). Recent research has shown that the spatial clustering of UA elements reduces CO emissions but underestimates its impact on vegetation carbon sequestration. Using an extended IPAT equation analysis framework and the Logarithmic Mean Divisia Index decomposition approach, this study revealed the positive effects of the economy and population spatial clustering on carbon footprint pressure (CFP) mitigation. Specifically, improving economic spatial clustering mitigated the rise in UA's CFP caused by affluence and population growth. Furthermore, population clustering in core cities effectively mitigated CFP in neighboring cities. Additionally, we found that the efficiency improvement, i.e., the decrease in the ratio of carbon emissions and gross domestic product, should be the dominant driver of CFP mitigation, followed by improved vegetation carbon sequestration. However, these drivers have limited future potential. We believe that by improving UA's spatial clustering of the economy and population, future urban environmental pressures and climate risks will be mitigated.
人为 CO 排放造成的环境压力日益增大，阻碍了城市群（UAs）的可持续发展。最近的研究表明，UA 要素的空间集聚减少了 CO 排放，但低估了其对植被碳固存的影响。本研究采用扩展的 IPAT 方程分析框架和对数平均迪氏指数分解方法，揭示了经济和人口空间集聚对碳足迹压力（CFP）缓解的积极影响。具体而言，改善经济空间集聚缓解了富裕和人口增长导致的 UA 的 CFP 上升。此外，核心城市的人口集聚有效地减轻了邻近城市的 CFP。此外，我们发现效率提高，即碳排放与国内生产总值的比率下降，应是缓解 CFP 的主要驱动因素，其次是改善植被碳固存。然而，这些驱动因素的未来潜力有限。我们相信，通过改善 UA 的经济和人口空间集聚，可以减轻未来城市的环境压力和气候风险。
