[Technical report, 141: Water environment survey 1994: Soil survey on catchment areas]

abonos agua de drenaje agua del suelo ammonia ammoniac aquatic organisms calidad del agua consommation consumo consumption danemark denmark dinamarca drainage water eau de drainage eau de ruissellement eau du sol eau souterraine engrais environmental protection escorrentia farmyard manure fertilizers fosforo fumier groundwater hidrologia hydrodynamics hydrodynamique hydrologie hydrology inorganic acid salts monitoring nitrate nitrates nitratos organisme aquatique pesticide pesticides phosphore phosphorus plaguicidas precipitation procesos de transporte en el suelo protection de l'environnement runoff soil transport processes soil types soil water tipos de suelos transport dans le sol type de sol vigilancia water quality