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Nitrate accumulation in leaves of vegetation of a forested ecosystem receiving high amounts of atmospheric ammonium sulfate
Authors:A. J. M. Stams  I. J. Lutke Schipholt
Affiliation:(1) Department of Microbiology, Wageningen Agricultural University, Hesselink van Suchtelenweg 4, 6703 CT Wageningen, The Netherlands
Abstract:Vegetation of an acid woodland, receiving an atmospheric ammonium input of about 3 kmol (40 kg N) per hectare per year, was analyzed on the content of organic nitrogen, ammonium and nitrate. A high nitrate content (50–320 μmol g−1 dry weight) was found in bird-cherry, black-berry and bracken, whereas only low amounts (up to 2 μmol g−1 dry weight) of nitrate were present in mountain-ash, hazel and the two dominant tree species oak and birch. The impact of this nitrate uptake and nitrate accumulation on soil pH and autotrophic nitrification is discussed.
Keywords:acid rain  atmospheric ammonium sulfate  nitrate accumulation  nitrate uptake  nitrification
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