Regional models describe the spatial and temporal dynamics of coupled
subsystems. They are based on a subregion classification and can be sp
lit up into a static and a dynamic part. Methods are outlined to map r
egional models by coupling geographic information systems and modellin
g and simulation systems. A database management system forms the inter
face between the two parts. The interface is supported by the model ca
libration and data import management of the simulation system in a fle
xible form. An application is devoted to the development of a one-sect
oral forest regional model.