[Natural resources and land use in the Glomma cathcment]

altitud altitude arbre forestier bases de datos bassin versant classification des terres control de inundaciones cours d'eau cultivated land cursos de agua data collection databases erosion control plants escorrentia flood control flooding forest inventories forest trees geologia geologie geology inondation inventaire forestier inventarios forestales land classification land use noruega norway peatlands rivers ruissellement runoff site factors soil types tierras cultivadas tipos de suelos type de sol utilisation des terres watersheds