In situ nitrogen mineralization in sub-tropical forest soil near Guiyang City, China

acid deposition agua del suelo bassin versant bosques cycle de l'azote eau du sol forest soils forests guizhou ion iones ions leaching lessivage du sol mineralisation mineralization nitrate nitrates nitratos nitrification nitrogen cycle procesos de transporte en el suelo soil transport processes soil water sol tropical subtropical zones suelo forestal suelo tropical transport dans le sol tropical soils watersheds zona subtropical zone subtropicale