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ModMED n-species vegetation biomass dynamics
Model : modmed1
Simile version : 3.1+
Date added : 2003-06-25
Keywords :
Vegetation dynamics ;
ModMED ;
Biomass ;
Description
The ModMED project is an international ecological research project studying vegetation dynamics in semi-natural vegetation of the Mediterranean region. The objective was to understand the behaviour of vegetation and to be able to construct predictive models that can be used in the future management of burning and grazing.
ModMED was based on a GIS-based modelling system, for handling landscape-level processes such as water movement and seed dispersal, combined with a variety of alternative vegetation models at the patch level. Simile was used for developing the vegetation models.
This example is one of the patch-level vegetation models. It focuses on the biomass dynamics of several species, using the same set of equations for the different species, using a multiple-instance submodel. This means that each species behaves according to the same set of equations, but can differ with respect to its parameter values. Additional submodel represent patch-level characterstics, such as water and fire.
Files
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modmed1.sml
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Diagram
This diagram gives an overview of the whole model. You can see the main submodel structure, and get some idea of the level of complexity (in terms of compartments, flows and variables) of the different submodels.
The following diagram shows the Biomass submodel in more detail.
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