Urban water-carbon pressure simulation and synergistic mitigation model from metabolism network analysis in the Pearl River Delta, China,Journal of Hydrology

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Urban water-carbon pressure simulation and synergistic mitigation model from metabolism network analysis in the Pearl River Delta, China
Journal of Hydrology ( IF 5.9 ) Pub Date : 2024-12-27 , DOI: 10.1016/j.jhydrol.2024.132615
Zhentong Wu, Weijin Pan, Zhiwei Luo, Ling Ji, Yulei Xie, Bingyi Wang

Urban water-carbon coupled pressure in the course of economic trade poses a potential challenge to regional water scarcity and carbon emission control. In this study, an import–export-water and carbon mitigation simulation model was proposed to explore the mechanisms of trade-driven impacts on regional water-carbon coupled pressure and search the coupled pressure reduction measures. In the model, the input–output analysis approach, water-carbon metabolism network, and the rows adjustments scaling method were integrated. Three indexes from an import–export trade driven perspective were developed for exploring the impact of import–export trade behavior on regional water-carbon coupled pressure. The Pearl River Delta of China was taken as the study area, and eight different import and export trade control scenarios were designed. The virtual water-embodied carbon flow paths, flow quantities, local water-carbon pressures, inter-city pressure transmission relationships, and the change of regional water-carbon coupled pressure in 2017 were obtained. The result indicated that differences in intercity trade dynamics had led to significant spatial disparities in virtual water flows and embodied carbon flows, and Shenzhen and Foshan city faced serious water-carbon pressures. Restriction strategies on the import side can be effective in carbon pressure mitigation, while the control strategies on the export side can significantly reduce water stress with potential risks of increasing carbon emissions. It indicated that the proposed model could help promote a better balance of water-carbon flow among multiple-regions with vibrant social and economic activities.

更新日期：2024-12-27

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