In article the specialised geoinformation system created by the author «GIS-national park “Hvalynsky”» is considered. Conceptual bases of the GIS, the maintenance of separate modular blocks, thematic structure of databases are shown.
In this article the method of creation a cartographic model of the geoecological situation of a territory is considered. The description of maps creation and their purpose is given. The necessity of relief using as the object of mapping in the creating a geoecological map is justified.