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Fuß, R. ; Ruth, B. ; Schilling, R. ; Scherb, H. ; Munch, J.-C.

Pulse emissions of N2O and CO2 from an arable field depending on fertilization and tillage practice.

Agric. Ecosyst. Environ. 144, 61-68 (2011)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Nitrous oxide (N2O) emissions from soil are characterized by strong emission pulses. Although several mechanisms are known to create them, pulses are difficult to predict. Currently there is no established systematic way to identify pulses from long-term static chamber measurement results. In this study we suggest a simple algorithm for pulse identification. The algorithm was applied on time series of N2O and carbon dioxide (CO2) fluxes from a field study on the long-term impact of fertilization and tillage practice. Between 4 and 9% of N2O values were pulse values; 20â??60% of total emission was emitted as pulses. Minimum tillage resulted in more pulses than plowing. In contrast, long-term averages of N2O losses from nitrogen (N) fertilizer were similar (3â??4%) for all management practices. N2O emissions per crop yield for increased fertilization practice were double the values for reduced fertilization practice independent of tillage practice. CO2 emission pulses were scarce and there was no significant effect of management practice on CO2 pulse probability.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter N2O flux
Sprache englisch
Veröffentlichungsjahr 2011
HGF-Berichtsjahr 2011
ISSN (print) / ISBN 0167-8809
e-ISSN 1873-2305
Zeitschrift Agriculture, Ecosystems & Environment
Quellenangaben Band: 144, Heft: 1, Seiten: 61-68 Artikelnummer: , Supplement: ,
Verlag Elsevier
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Soil Ecology (IBOE)
Institute of Biomathematics and Biometry (IBB)
POF Topic(s) 20402 - Sustainable Plant Production
30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
Forschungsfeld(er) Environmental Sciences
PSP-Element(e) G-504400-002
G-504400-001
G-503800-001
DOI 10.1016/j.agee.2011.07.020
Scopus ID 80052838433
Erfassungsdatum 2011-12-01
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