基于能值的资源型城市新陈代谢过程对比分析

城市新陈代谢注重分析城市物质、能量和货币的流动过程，这为探讨不同职能城市的城市代谢过程提供了新的视角。为了探讨不同资源型城市的新陈代谢特点和变化规律，分别以山西省省会资源型城市太原市和传统资源型城市晋城市为例，基于太原市和晋城市2007—2014年的社会经济数据，运用能值理论构建了8项反映城市新陈代谢的评价指标体系，从城市新陈代谢系统能值结构、能值使用强度、能值环境压力和新陈代谢产出效率4个方面，对太原市和晋城市2007—2014年城市新陈代谢状况进行了对比分析。结果表明:2007—2014年，总体上，太原市的城市新陈代谢系统能值结构优于晋城市，晋城市的能值使用强度高于太原市，晋城市的能值环境压力大于太原市，太原市的新陈代谢产出效率高于晋城市。通过对比分析后对提高太原市和晋城市的城市新陈代谢过程提出了建议，为创造性地解决山西省新陈代谢资源与生态风险问题奠定基础，进而为城市生态管理提供科学依据。

Comparative Analysis of Resource-Oriented Urban Metabolisms Based on the Emergy Theory

Urban metabolism highlights the processes of materials, energy and money flows of urban system, which provides a new perspective on analyzing the process of urban metabolism of different functional cities. In this paper, in order to explore the similarities and differences of metabolic characteristics and variation rules of different types of resource-dependent cities, taking the capital Taiyuan of Shanxi Province and a traditional resource-dependent city—Jincheng as the example, respectively, we established the urban metabolic evaluation framework by employing a set of eight emergy-based indicators through using socio-economic data from 2007 to 2014, and compared the similarities and discrepancies from perspectives of the urban metabolic emergy system’s structure, emergy metabolic intensity, emergy environmental pressure and metabolic output efficiency. The results show that emergy system’s structure of Taiyuan is higher than Jincheng on the whole, emergy metabolic intensity of Jincheng is higher than Taiyuan, emergy environmental pressure of Jincheng is greater than Taiyuan, metabolic output efficiency of Taiyuan is higher than Jincheng. The recommendations on improving metabolic process of Jincheng and Taiyuan are put forward in order to lay the foundation for creatively solving metabolic resources and ecological risk, and to provide the scientific basis for ecosystem management of the city in Shanxi Province through comparative analysis.