Landscape Modeling Framework

The unit model is replicated in each of the cells on the study area. Different habitat types are characterized by different parameters in the unit model. Hydrologic fluxes connect the unit models horizontally.

Models are simplifications of reality and as such allow us to communicate knowledge and data among diverse groups of stakeholders. They help us structure quantitative and qualitative information about watersheds and their elements, offering tools for integrated assessment and decision support. These are important prerequisites for a successful planning effort.

We use a modular, multiscale approach to build, calibrate and test a model. The model incorporates an ecosystem-level unit model that is replicated in each of the unit cells representing the landscape. The model builds on the format of a raster-based geographic information system (GIS), which is used to store all the spatially referenced data. Horizontal fluxes link the cells together across the landscape to form the full landscape model. These spatial fluxes are driven by cell-to-cell head differences of surface and ground water in saturated storage. Water fluxes between cells carry dissolved and suspended materials and determine water quality in the landscape. The modular structure is important for flexible model adjustments and scaling experiments.

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