State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China.
Environ Pollut. 2012 Nov;170:169-76. doi: 10.1016/j.envpol.2012.07.010. Epub 2012 Jul 21.
Cities can be modelled as giant organisms, with their own metabolic processes, and can therefore be studied using the same tools used for biological metabolic systems. The complicated distribution of compartments within these systems and the functional relationships among them define the system's network structure. Taking Beijing as an example, we divided the city's internal system into metabolic compartments, then used ecological network analysis to calculate a comprehensive utility matrix for the flows between compartments within Beijing's metabolic system from 1998 to 2007 and to identify the corresponding functional relationships among the system's compartments. Our results show how ecological network analysis, utility analysis, and relationship analysis can be used to discover the implied ecological relationships within a metabolic system, thereby providing insights into the system's internal metabolic processes. Such analyses provide scientific support for urban ecological management.
城市可以被模拟为巨型生物体，具有自身的新陈代谢过程，因此可以使用与生物代谢系统相同的工具进行研究。这些系统内部隔室的复杂分布和它们之间的功能关系定义了系统的网络结构。以北京为例，我们将城市内部系统划分为代谢隔室，然后使用生态网络分析来计算 1998 年至 2007 年北京代谢系统内隔室之间流的综合效用矩阵，并确定系统隔室之间的相应功能关系。我们的结果表明，生态网络分析、效用分析和关系分析如何用于发现代谢系统内隐含的生态关系，从而深入了解系统的内部代谢过程。此类分析为城市生态管理提供了科学依据。
