我国不仅面临严峻的资源枯竭和环境污染问题，而且垃圾围城问题日趋严峻。城市再生资源回收利用和产业共生是从根本上解决这些问题，推动经济、社会和环境可持续发展的重要途径之一。本研究拟选择大都市上海为目标城市，通过实地调研和数据挖掘等方法构建目标城市再生资源回收体系和共生系统数据库；利用物质流分析方法梳理关键可再生资源从回收到共生利用的物质流和能量流特征，探究城市资源回收和产业共生体系的关键协同因素及相互作用和反馈关系；然后利用系统动力学方法构建“城市再生资源回收--产业共生体系”一体化系统仿真模型，通过优化仿真揭示二者协同耦合机制；最后集成生命周期评价法、投入产出法和IPCC指南，构建“城市再生资源回收--产业共生体系”碳排放核算模型，从生命周期视角系统评估“再生资源回收--产业共生体系”的碳排放绩效和减排潜力。研究成果将切实推进我国循环经济建设，为我国特大城市低碳发展提供切实可行的政策建议。

China is facing great challenges of resource depletion and environmental pollution. At the same time, the increasing municipal solid wastes have resulted in problems that no further land is available for new landfills. To collect and recycle those valuable wastes and promote industrial symbiosis is one effective method on solving these problems and realizing sustainable development by integrating economic and social development, and environmental protection. Under such a circumstance, this project will select Shanghai as one case study city. By investigating the real sites and conducting data mining, an information database integrating all the valuable wastes and industrial symbiosis will be established. By employing material flow analysis, key features on wastes collection-urban/industrial symbiosis will be recognized and key energy flows will be identified so that the interactions and feedbacks among different components can be clarified. By applying system dynamics method, a simulation model on urban wastes collection and urban/industrial symbiosis will be developed so that the coupling mechanism can be uncovered. Finally, by integrating life cycle analysis, input-output analysis and IPCC methods, a carbon accounting model will be developed for evaluating this urban resource collection and recycling system and exploring its carbon emission reduction potential. We expect that the outcomes of this project will facilitate China’s circular economy development and provide valuable policy insights to those urban managers so that those mega cities can move toward low carbon development.