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这个是该项目的网页http://fiesta.bren.ucsb.edu/~rhessys/
RHESSys is a GIS-based, hydro-ecological modeling framework designed to simulate carbon, water and nutrient fluxes. RHESSys combines both a set of physically based process models and a methodology for partitioning and parameterizing the landscape. RHESSys' architecture models the spatial distribution and spatial-temporal interactions between the different processes at the watershed scale. RHESSys, as described here, presents a significant modification of earlier versions of RHESSys as described in Band et al., (1991, 1993) and referenced by Mackay and Band (1997), Creed and Band (1998) etc..
RHESSys process models have been adapted from several pre-existing models. Specific algorithms within these original models have been modified to reflect various developments in the associated literature or to fit within the RHESSys modeling framework. The original process models include the following:
- GRASS2WORLD (derives landscape representation from GIS images)
- CREATE_FLOWPATHS (establishes connectivity between spatial units)
These programs include methods for partitioning a landscape into hydrologically distinct units, establishing the connectivity between the units and determining how input data should be assigned to the RHESSys framework. (An ArcView interface, RAIMEnt, which combines some of the features offered by these various programs, has also been developed (Tenenbaum, 1998).
Figure 1 presents an overview of input data into, internal processing and flow of control within, and derived output for the RHESSys modeling system. The different components of this system will be described in the documents on this website.
Figure 1 |
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