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Dinitrogen emissions: an overlooked key component of the N balance of montane grasslands

Zistl-Schlingmann, M. 1,2; Feng, J. 1,2; Kiese, R. ORCID iD icon 1,2; Stephan, R. 1,2; Zuazo, P. 1,2; Willibald, G. 1,2; Wang, C.; Butterbach-Bahl, K. 1,2; Dannenmann, M. 1,2
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)
2 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)

Abstract:

While emissions of nitric oxide (NO), ammonia (NH₃) and nitrous oxide (N₂O) from grassland soils have been increasingly well constrained, soil dinitrogen (N₂) emissions are poorly understood. However, N₂ losses might dominate total gaseous nitrogen (N) losses. Knowledge on N losses is key for the development of climate-adapted management that balances agronomic and environmental needs. Hence, we quantified all gaseous N losses from a montane grassland in Southern Germany both for ambient climatic conditions and for a climate change treatment (+ 2°C MAT, - 300 mm MAP). Monthly measurements of soil N₂ emissions of intact soil cores revealed that those exceeded by far soil N₂O emissions and averaged at 350 ± 101 (ambient climate) and 738 ± 197 lg N m¯²h¯¹ (climate change). Because these measurements did not allow to quantify emission peaks after fertilization, an additional laboratory experiment was deployed to quantify the response of NH₃, NO, N₂O, and N₂ emissions in sub daily temporal resolution to a typical slurry fertilization event (51 kg N ha¯¹). Our results revealed that total N gas losses amounted to roughly half of applied slurry-N. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000092533
Originalveröffentlichung
DOI: 10.1007/s10533-019-00547-8
Scopus
Zitationen: 33
Web of Science
Zitationen: 31
Dimensions
Zitationen: 33
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 0168-2563, 1573-515X
urn:nbn:de:swb:90-925330
KITopen-ID: 1000092533
HGF-Programm 12.02.01 (POF III, LK 01) Effects of land use and climate change
Erschienen in Biogeochemistry
Verlag Springer
Band 143
Heft 1
Seiten 15-30
Vorab online veröffentlicht am 15.02.2019
Schlagwörter Climate change, Denitrification, Dinitrogen, Nitrous oxide, Fertilizer emissions, temperate grassland
Nachgewiesen in Web of Science
Dimensions
Scopus
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