The General Human Model
Roelof Boumans, Matthew Wilson, Robert Costanza and Alexey Voinov
The General Human Model (GHM) is developed to simulate wealth dynamics across space and time for forecasting and analyses of human wellbeing. The complex nature of the multidimensional and non-linear dynamics embedded within alternative definitions of wealth is equal to those observed in ecosystems. Unlike wealth equated to material goods acquired, the phenomenon that separates wealth from poverty in the GHM is more defined as a multidimensional phenomenon, encompassing the ability to satisfy basic needs. These needs are to be in control over resources, having access to education and development and application of skills, health through proper nutrition, shelter, access to water and sanitation, experiencing low levels of violence and crime, political freedom and voice (Marlin, 1992). Lately new variables were added to the equation of prosperity documented as ecosystem services (Costanza, 1997).
GHM, developed around human, social, built and natural capital, was applied and calibrated as a module within the Global Unified Model of the BiOsphere (GUMBO). At present the GHM is formatted to be a regional application within the Baltimore Gwynns Falls area. Application, verification and calibration of the regional GHM proceeds parallel to the development of the Human Ecosystem Model, a structural approach to management of socio-economic data (Machlis, Force, and Burch). GHM natural capital is linked to the Gwynns Falls Landscape Model (GFLM).
Keywords: Humans complex wealth

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