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Modelling the response of soil and soil solution chemistry upon roofing a forest in an area with high nitrogen deposition
1DLO Winand Staring Centre for Integrated Land, Soil and Water Research, P.O. Box 125, 6700 AC Wageningen, The, Netherlands.
2University of Nijmegen, Department of Ecology, Research Group of Environmental Biology. P.O. Box 9010, 6500 GL Nijmegen, The Netherlands.
Abstract. In the Speuld forest, the Netherlands, the dynamic soil acidification model NuCSAM has been applied to a manipulation experiment in which part of the forest was roofed to control nitrogen (N) and sulphur (S) deposition. The roofed area was divided into two subplots watered artificially; one received ambient N and S deposition and one with pristine N and S deposition. Concentration measurements on each plots showed a high (time-dependent) spatial variability. Statistical analyses of the concentrations on both subplots showed small but significant effects of the reduction in deposition on nitrate (NO3) sulphate (SO4) and aluminum (Al) concentrations. The statistical significance of the effects was minimised by the large spatial variability within the plots. Despite these shortcomings, simulated concentrations were generally within the 95% confidence interval of the measurements although the effect of a reduction in N deposition on soil solution chemistry was underestimated due to a marked decline in N-uptake by the vegetation.
Final Revised Paper (PDF, 2319 KB)
Citation: van der Salm, C., Groenenberg, B.-J., and Boxman, A. W.: Modelling the response of soil and soil solution chemistry upon roofing a forest in an area with high nitrogen deposition, Hydrol. Earth Syst. Sci., 2, 451-471, 1998. Bibtex EndNote Reference Manager
