Spatial and temporal variability of extractable inorganic nitrogen in the topsoil of German peatlands

Tiemeyer, Bärbel GND; Roßkopf, Niko; Beetz, Stephan GND; Beyer, J. C.; Eickenscheidt, Tim; Giebels, Michael; Leiber-Sauheitl, Katharina GND; Peichl-Brak, Mandy; Freibauer, Annette GND

Extractable inorganic nitrogen (N min) is used as indicator for the fertilisation demand, nitrogen leaching risk and nitrous oxide emissions from soils, but a comprehensive data set for peatlands and other organic soils is missing. Here, we present a part of a data set from 61 sites covering all important land use classes and organic soil types in Germany. As expected, the N min content of fen sites is higher than that of bog sites. The groundwater table amplitude and the C:N ratio are promising scaling variables for NO3-N, while driving factors for NH4-N seem to be more difficult to identify.

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Tiemeyer, Bärbel / Roßkopf, Niko / Beetz, Stephan / et al: Spatial and temporal variability of extractable inorganic nitrogen in the topsoil of German peatlands. Uppsala 2012. SLU.

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