Ecological relationship analysis of the urban metabolic system of Beijing, China.

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.

[1]  Scott Elliott,et al.  ENERGY AND MATERIAL FLOW THROUGH THE URBAN ECOSYSTEM , 2000 .

[2]  Johanna J. Heymans,et al.  Network analysis of the South Florida Everglades graminoid marshes and comparison with nearby cypress ecosystems , 2002 .

[3]  Albert Koenig,et al.  Escalating Trends in the Urban Metabolism of Hong Kong: 1971–1997 , 2001, Ambio.

[4]  S. Barles,et al.  Feeding the city: food consumption and flow of nitrogen, Paris, 1801-1914. , 2007, The Science of the total environment.

[5]  Brian D. Fath,et al.  Network mutualism: Positive community-level relations in ecosystems , 2007 .

[6]  John R. Schramski,et al.  Network environ theory, simulation, and EcoNet® 2.0 , 2011, Environ. Model. Softw..

[7]  Paul H. Brunner,et al.  Material Flow Analysis: A tool to support environmental policy decision making. Case-studies on the city of Vienna and the Swiss lowlands , 2000 .

[8]  A. Wolman.  THE METABOLISM OF CITIES. , 1965, Scientific American.

[9]  Robert R. Christian,et al.  Evaluation of ecological network analysis : Validation of output , 2008 .

[10]  Halla R Sahely,et al.  Estimating the urban metabolism of Canadian cities: Greater Toronto Area case study , 2003 .

[11]  Huang He.  Material flow analysis (MFA) of an eco-economic system: a case study of Wujin District, Changzhou , 2006 .

[12]  Zhifeng Yang,et al.  Ecological network and emergy analysis of urban metabolic systems: Model development, and a case study of four Chinese cities , 2009 .

[13]  Richard Moles,et al.  Assessment of total urban metabolism and metabolic inefficiency in an Irish city-region. , 2009, Waste management.

[14]  Ferenc Jordán,et al.  Identifying important species: Linking structure and function in ecological networks , 2008 .

[15]  Janet K. Allen,et al.  Applying Ecological Input‐Output Flow Analysis to Material Flows in Industrial Systems: Part I: Tracing Flows , 2004 .

[16]  Yang Zhi.  Eco-efficiency of urban material metabolism:a case study of Shenzhen , 2007 .

[17]  D. Pauly,et al.  Fishing down marine food webs , 1998, Science.

[18]  Jeffrey Kenworthy,et al.  Sustainability and Cities: Overcoming Automobile Dependence , 1999 .

[19]  Brian D. Fath,et al.  Exploring simple structural configurations for optimal network mutualism , 2009 .

[20]  Robert R. Christian,et al.  Organizing and understanding a winter's seagrass foodweb network through effective trophic levels , 1999 .

[21]  Yan Zhang,et al.  Ecological network analysis of China's societal metabolism. , 2012, Journal of environmental management.

[22]  C. Walters,et al.  Structuring dynamic models of exploited ecosystems from trophic mass-balance assessments , 1997, Reviews in Fish Biology and Fisheries.

[23]  Yan Zhang,et al.  Ecological network analysis of an urban energy metabolic system: Model development, and a case study of four Chinese cities , 2010 .

[24]  Brian D. Fath,et al.  On the consequences of aggregation and balancing of networks on system properties derived from ecological network analysis , 2009 .

[25]  C. Kennedy,et al.  Metabolism of Neighborhoods , 2008 .

[26]  Yan Zhang,et al.  Ecological network analysis of an urban water metabolic system: model development, and a case study for Beijing. , 2010, The Science of the total environment.

[27]  Z. F. Yang,et al.  Ecological network analysis for water use systems—A case study of the Yellow River Basin , 2009 .

[28]  Yan Zhang,et al.  Eco-efficiency of urban material metabolism: a case study in Shenzhen, China , 2007 .

[29]  B. C. Patten,et al.  Systems Analysis and Simulation in Ecology , 1978, IEEE Transactions on Systems, Man, and Cybernetics.

[30]  Robert W. Bosserman,et al.  17 – Propagation of Cause in Ecosystems , 1976 .

[31]  Shu-Li Huang,et al.  Materials flow analysis and emergy evaluation of Taipei's urban construction , 2003 .

[32]  Janet K. Allen,et al.  Applying Ecological Input‐Output Flow Analysis to Material Flows in Industrial Systems: Part II: Flow Metrics , 2004 .

[33]  Stuart R. Borrett,et al.  Indirect effects and distributed control in ecosystems: Comparative network environ analysis of a seven-compartment model of nitrogen flow in the Neuse River estuary, USA—Time series analysis , 2007 .

[34]  Brian D. Fath,et al.  Network synergism: Emergence of positive relations in ecological systems , 1998 .

[35]  B. Hannon,et al.  The structure of ecosystems. , 1973, Journal of theoretical biology.

[36]  J. Finn,et al.  Measures of ecosystem structure and function derived from analysis of flows. , 1976, Journal of theoretical biology.

[37]  C. Kennedy,et al.  The Changing Metabolism of Cities , 2007 .

[38]  Bernard C. Patten,et al.  Systems Approach to the Concept of Environment , 1978 .

[39]  Robert R. Christian,et al.  Ecological network analyses and their use for establishing reference domain in functional assessment of an estuary. , 2009 .

[40]  Brian D. Fath,et al.  A MATLABreg function for Network Environ Analysis , 2006, Environ. Model. Softw..

[41]  Hao Zhang,et al.  Eco-health evaluation for the Shanghai metropolitan area during the recent industrial transformation (1990-2003). , 2008, Journal of environmental management.

[42]  B. C. Patten,et al.  Review of the Foundations of Network Environ Analysis , 1999, Ecosystems.

[43]  Cristina Bondavalli,et al.  Towards a sustainable use of water resources: a whole-ecosystem approach using network analysis , 2002 .

[44]  P. Newman.  Sustainability and cities: extending the metabolism model , 1999 .