Keywords: punctual data, distribution of natural elements, spatial numerical models, reliability of information, precipitation, geographic information system, geophysics, transmission measurements, salt domes, informatics, Forest Fire Prevention Map, GIS in Polish Forest, aerial photographs, satellite images, structure ofthe environment, regionalisation, geographic information, direct position, conceptual modeling, conceptual schema, geodetic reference system, geodetic datum, geodetic ellipsoid, geoid, cartographic projection, coordinate conversion, coordinate transformation, UML, class diagram, EXPRESS language, city, urbanization, spatial planning, geographical information systems, cartography, ecology, city management