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Nutrient Loading of a Forest Soil. A Manipulative Approach Using Rooted Experimental Chambers

T. W. Willison, P. R. Splatt and J. M. Anderson
Oecologia
Vol. 82, No. 4 (1990), pp. 507-512
Published by: Springer in cooperation with International Association for Ecology
Stable URL: http://www.jstor.org/stable/4219274
Page Count: 6
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Nutrient Loading of a Forest Soil. A Manipulative Approach Using Rooted Experimental Chambers
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Abstract

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 increased N-loading, and the ability of soils to buffer these perturbations.

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