基于跨区域视角的城市食物-能源-水关联系统的核算及评估工具包开发

The range and complexity of interdependencies between food scarcity, energy security and water shortage, including synergies and trade-offs, are greatest in cities, especially the efficient provision of food-energy-water (FEW) is particularly challenging. At a local level, integrated water resources management or integrated energy planning have existed for some time, but single policy focused on one element is difficult to resolve the complex urban FEW problems. In consideration of the complex interconnectedness of the food, energy, and water systems, innovative approaches to model the urban food-energy-water (FEW) nexus as an integrated whole, instead of examining them individually, is urgently needed, for sustainable provision of food, energy, and water in urban areas with improved efficiency. How to account and analyze the urban FEW nexus is the academic frontier and hot point in the research on urban ecological collaborative management pattern in the world. Energy, water, land, N, P, as the important representative ecological elements in the FEW system, are showing the complex flow structure across the multi-regions and industrial network inside the city boundary in the form of physical and embodied flows. Therefore, this research aims to construct an integrated analysis framework for urban FEW nexus system considering the multi-regions, sectors and ecological elements perspectives. Based on the modified input-output model, a city-centric multi-regional network accounting model will be built to account the metabolic process, network structure and flow law among energy, water, land, N and P. It aims to uncover the correlative mechanism among the multi ecological elements in the urban FEW nexus system which is the key scientific issues should be resolved in this search. Based on the the analysis framework, accounting model, nexus analysis and visualization display approaches, an assessment toolkit for the urban FEW nexus system will be constructed in order to present and evaluate the results of urban FEW nexus accounting and analysis. It will provide decision support for the urban ecological collaborative management.

城市食物-能源-水关联系统（Food-Energy-Water，FEW）存在异常复杂性，如何定量核算及解析城市FEW关联系统，是目前国内外研究城市生态协同管理模式的前沿和热点。能、水、土地、N、P作为FEW关联系统的表征生态要素，在城市尺度上以“实体-隐含”二维形式，呈现出错综复杂的跨区域及网络关联的流动格局。本项目从系统观出发，基于多区域、跨部门及全要素视角，构建了城市FEW关联系统的分析框架，并基于改进的投入产出方法构建了城市跨尺度网络核算模型，厘清城市FEW关联系统内能、水、土地、N、P多种生态要素的代谢过程、网络结构特征及关联规律，旨在揭示城市FEW关联系统内多要素间相互作用的关联机制；集成“分析框架-核算模型-关联分析-可视化展示”方法，建立一套城市FEW关联系统的评估工具包，以北京为例，清晰直观地展示FEW关联系统的核算及关联分析的评价结果，为城市生态协同管理提供决策支持。