Abstract
A direct correlation was found between fractional losses of added N and the change in δ15N‰ during 19 years in an experiment with annual additions of N at three rates to a Scots pine (Pinus sylvestris L.) forest in northern Sweden. This confirms that processes leading to losses of N discriminate against15N, and opens possibilities to conduct retrospective studies of the N balance in forests.
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Högberg, P., Johannisson, C. 15N Abundance of forests is correlated with losses of nitrogen. Plant Soil 157, 147–150 (1993). https://doi.org/10.1007/BF02390237
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DOI: https://doi.org/10.1007/BF02390237