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Figure 1 | Carbon Balance and Management

Figure 1

From: Modelling carbon dynamics from urban land conversion: fundamental model of city in relation to a local carbon cycle

Figure 1

Carbon flows in an "urbanised" ecosystem. Flows: 1. Production „NPP” = (NPP)* S g , 2. „Decomposition”= =(1 - k e )(NPP)* S g , 3. "Land conversion", dC l = (B* + D*)dS, 4. "Export" = k e (NPP)* S g . The (NPP)*, B* and D* are the local stationary values of the NPP, living biomass and humus, correspondingly; the coefficient k e is a fraction of dead organic matter exported from the "urban" ecosystem into neighbouring territories. Areas: 1. S g – „Green” area (park zone), 2. S f – area occupied by favelas, 3. S b – built-up area, 4. dS – annual increment of urbanised area, S = S g + S f + S b – total urbanised area.

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