Spatial variation in the ecological relationships among the components of Beijing's carbon metabolic system

Xia, L., Fath, B.D. ORCID:, Scharler, U.M., & Zhang, Y. (2016). Spatial variation in the ecological relationships among the components of Beijing's carbon metabolic system. Science of the Total Environment 544 103-113. 10.1016/j.scitotenv.2015.11.110.

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In this paper, we construct a spatially explicit model of carbon metabolism for the flows of carbon among the components of an urban area. We used the model to identify spatial heterogeneity in the ecological relationships within a carbon metabolic network. We combined land-use and cover type maps for Beijing from 1990 to 2010 with empirical coefficients and scioeconomic data to quantify the flows. We used utility analysis to determine the ecological relationships between the components of the system and analyzed their changes during urban development. We used ArcGIS to analyze their spatial variation. We found that the positive utilities in Beijing decreased over time and that negative relationships mostly outweighed positive relationships after 2000. The main ecological relationships were distributed throughout the entire urban area before 2000; subsequently, exploitation, control, and mutualism relationships became concentrated in the southeast, leaving competition relationships to dominate the northwest. Mutualism relationships were most common for natural components, but were not stable because they were easily disturbed by urban expansion. Transportation and industrial land and urban land were the most important contributors to exploitation and control relationships and may be important indicators of spatial adjustment. Increasing competition relationships unbalanced the carbon metabolism, and limitations on the area of land available for development and on the water resources led to increasingly serious competition. The results provide an objective basis for planning adjustments to Beijing's land-use patterns to improve its carbon metabolism and reduce carbon emission.

Item Type: Article
Uncontrolled Keywords: urban metabolism; ecological relationships; ecological network analysis; spatial analysis; land-use and cover change; carbon emisssion
Research Programs: Advanced Systems Analysis (ASA)
Bibliographic Reference: Science of The Total Environment; 544:103-113 [February 2016] (Published online 2 December 2015)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 08:54
Last Modified: 27 Aug 2021 17:25

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