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National nitrogen budget for Germany

Häußermann, Uwe; Bach, Martin; Fuchs, Stephan 1; Geupel, Markus; Heldstab, Jürg; Klement, Laura; Knoll, Lukas; Reutimann, Judith; Schäppi, Bettina; Weber, Tatyana 1; Breuer, Lutz
1 Institut für Wasser und Gewässerentwicklung (IWG), Karlsruher Institut für Technologie (KIT)


Emissions of reactive nitrogen (N-r) give rise to a wide range of environmental problems. Nitrogen budgets for various systems and on different scales are an established tool to quantify the sources and fate of N-r. The national nitrogen budget (NNB) for Germany calculates the nitrogen flows for eight pools: Atmosphere, Energy and Fuels, Material and Products in Industry, Humans and Settlements, Agriculture, Forest and Semi-natural Vegetation, Waste, and Hydrosphere, as well as for the transboundary N-flows. In Germany, in total 6,275 kt N-r a(-1) has been introduced into the nitrogen cycle annually (mean 2010 to 2014), of which 43% stem from ammonia synthesis. Domestic extraction and import of nitrogenous fossil fuels (lignite, coal, crude oil) releases another 2,335 kt N-r a(-1). Import of food, feed and materials contributes 745 kt N-r a(-1), while biological N fixation converts 308 kt N-r a(-1) into organically bound nitrogen. In terms of N-r sinks, the combustion and denoxing of fuels and the refining of crude oil converts 2,594 kt N-r a(-1) to N-2. In waters, soils, and wastewater treatment plants, denitrification leads to the release of 1,107 kt N-r a(-1) as N-2. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000138415
Veröffentlicht am 01.10.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Wasser und Gewässerentwicklung (IWG)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2021
Sprache Englisch
Identifikator ISSN: 2515-7620
KITopen-ID: 1000138415
Erschienen in Environmental research communications
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 3
Heft 9
Seiten Art.-Nr.: 095004
Vorab online veröffentlicht am 16.09.2021
Nachgewiesen in Web of Science
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