Nutrient loading of a forest soil |
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Authors: | T W Willison P R Splatt J M Anderson |
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Institution: | (1) Department of Biological Sciences, Hatherly Laboratory, University of Exeter, EX4 4PS Exeter, Devon, England |
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Abstract: | Summary During July 1988 rooted and non-rooted experimental chambers were established in a Norway spruce (Picea abies. Karst) stand in south Devon U.K. Replicates were supplemented with ammonium and nitrate. The leachates were analysed to monitor the release of mineral-N species and cations over the 17-week experimental period. Ammonium treatments leached 300% more calcium and magnesium than controls. The onset of nitrification resulted in a decrease in sodium losses from ammonium treatments reflecting a decrease in the exchanging capacity of the soil solution. These results are discussed in relation to mineral ion leaching in soils subjected to increesed N-loading, and the ability of soils to buffer these perturbations. |
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Keywords: | Forest soils Nitrification Nitrogen loading Cation leaching Norway spruce |
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