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Abstract

Auswirkungen erhöhter N-Depositionen auf die Auswaschung von Ammonium, Nitrat und organisch gebundenem Stickstoff eines Kiefernwaldbodens. In: Kontamination aus der Nutzung von Ressourcen – Probleme und Lösungen

The objective of this study was to examine, the impact of different amounts of nitro-gen on nitrogen transformation processes in the organic layer, and the upper, middle, and lower layers of mineral soil. Two dosis of nitrogen (45 and 90 kg ha-1 a-1) were applicated in a dissolved form as (NH4)2SO4 to the organic layer for 14 weeks and compared to an unamended control Each week soil leachates of the different soil layers were analysed for concentrations of total nitrogen, NH4+-N, NO3- -N, particulare bound nitrogen and dissolved organic nitrogen. Nitrogen application significantly in-fluenced soil solution pH, concentrations of total nitrogen, NH4+-N, and NO3- -N in all soil layers. The concentrations of organic nitrogen were influenced by the nitrogen application in the organic layer and the upper mineral soil layer only. The high amounts of nitrogen leached from the organic layer and the upper mineral soil were almost completely incorporated in the middle and lower mineral soil layers.



Scheuner, E.T.; Makeschin, F. 2001. Auswirkungen erhöhter N-Depositionen auf die Auswaschung von Ammonium, Nitrat und organisch gebundenem Stickstoff eines Kiefernwaldbodens. In: Kontamination aus der Nutzung von Ressourcen – Probleme und Lösungen (M. Fall & B. Merkel, Hrsg.). TU Bergakademie Freiberg, Wissenschaftliche Mitteilungen, Band 18.