基于碳代谢的城市功能空间布局与运行效能评估研究

Cities have become the major source of global greenhouse gas emission. Regulation of the emission from the urban development is the key point for greenhouse gas emissions control. With the long term and structural effect on urban development, urban functional space organization is the necessary policy instrument for carbon emission reduction of cities, which has important meaning for building low carbon cities. Previous empirical research on the relationships between urban functional space organization and carbon emission pay attention on the macro morphology indicators such as urban density, land use mixture and spatial compactness. Studies on the relationship between inner configuration of urban functional space and carbon emission are relatively insufficient. On the other hand, urban greenhouse gas emission inventory analysis by terminal department is difficult to apply on the specific urban functional space to guide the optimization of the urban functional space organization. This proposal plans to (1) analyze the mechanism and key factors of carbon metabolism with the evolution of urban functional space organization, (2) construct the quantitative evaluation system of urban operational efficiency based on the carbon metabolism and (3) build the simulation model for urban functional space organization and urban metabolism efficiency, to reveal the optimal development mode for building low carbon cities.

城市在实现自身功能的同时，成为全球温室气体排放的主要排放源，对城市功能实现的碳排调控是温室气体排放控制的重点，城市功能空间布局对于城市发展有长期、结构性的作用，对于构建低碳城市具有重要意义，是城市减少碳排放不可或缺的政策手段。目前已有关于城市功能空间布局与碳排放关系的实证研究多关注城市密度、土地利用混合性、空间形态紧凑性等宏观的整体形态指标，对于城市功能空间的内部配置与碳排放的关系研究相对不足；另一方面，城市在编制碳排放清单时采用的终端法往往只有分部门总量，难于落实到具体的城市功能空间上以指导城市功能空间的优化配置。本研究拟在分析城市功能布局演变对碳代谢过程的影响机制及关键因素的基础上，构建基于碳代谢的城市运行效能定量评估体系，并进一步建立城市功能布局与碳代谢效能的模拟模型，从而在更精细的城市功能空间尺度上探明低碳城市建设的最优发展模式。

城市在实现自身功能的同时，成为全球温室气体排放的主要排放源，对城市功能实现的碳排调控是温室气体排放控制的重点，城市功能空间布局对于城市发展有长期、结构性的作用，对于构建低碳城市具有重要意义，是城市减少碳排放不可或缺的政策手段。本项目针对城市功能空间的内部配置与碳排放的关系研究相对不足和难于落实到具体的城市功能空间上以指导城市功能空间的优化配置的问题，在分析城市功能布局演变对碳代谢过程的影响机制及关键因素的基础上，构建基于碳代谢的城市运行效能定量评估方法，并进一步建立城市功能布局与碳代谢效能的模拟模型，从而在更精细的城市功能空间尺度上探明低碳城市建设的最优发展模式。