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The study estimates nitrate leaching in Germany by coupling the agrarian model RAUMIS with a hydrological and a denitrification model and transfers the results into the GHG emission inventory. In contrast to the IPCC method, which has been used so far, the new method estimates nitrate leaching based on nitrogen (N) surplus instead of N input. As a result, the calculated indirect nitrous oxide emissions from nitrate leaching are only half of the values reported up to now. It is planned to include the new method in the reporting submission 2024.
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New paper on nitrate leaching in Germany
© Journal of Plant Nutrition and Soil Science, DOI: (10.1002/jpln.202200119)
Denitrification loss in soil based on displaceable nitrogen input into soil, soil residence time, and maximum denitrification degradation according to the DENUZ model.
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