Creating GIS on the pilot area of the Litomerice district - from soil survey to international information systems

agricultural soils aluminio aluminium arcilla argile azufre calcio calcium carbon carbonate carbonates carbonatos carbone carbono cartografia cartographie cartography cation cationes cations chemical composition classification des sols clay composition chimique czech republic data analysis data processing farmland geographical information systems grosseur des particules information storage ion exchange capacity magnesio magnesium mathematical models particle size ph del suelo ph du sol potasio potassium procesamiento de datos reconocimiento de suelos sodio sodium soil chemicophysical properties soil classification soil ph soil surveys sol agricole soufre statistical methods stockage de l'information sulphur terre agricole