The pcosses of spatial layout analysis focused on three parameters: the biophysical, social, and economic. simulation model was built using stella software to model as closely as possible linkages between the real-life factors that include these three parameters. model ouput in the form of forested area is recommented for each province : bali, riau, and south kalimantan. the software then made to continue the result obtainde from the stella model to be able to map where the location should be forested and where that does nothave porested. the algorithm determining the location of the area using the grid method on the basic of the map. the study is expected to provide the basic algorithm from creating software for the application of spatial dynamic models in shapefile format digital map using the gird method. in addition to spatial forested area, the method can be used for many other purposes.