Use of the 15 N gas flux method to measure the source and level of N2O and N2 emissions from grazed grassland
Understanding the contribution of nitrification and denitrification to production of nitrous oxide (N 2 O), a potent greenhouse gas, is important in devising effective mitigation strategies to reduce emissions. In this study the 15 N gas flux method was used to investigate N 2 O and N 2 emissions fo...
Gespeichert in:
| Veröffentlicht in: | Nutrient cycling in agroecosystems 2012-12, Vol.94 (2-3), p.287-298 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | Understanding the contribution of nitrification and denitrification to production of nitrous oxide (N
2
O), a potent greenhouse gas, is important in devising effective mitigation strategies to reduce emissions. In this study the
15
N gas flux method was used to investigate N
2
O and N
2
emissions following an application of
15
N labelled ammonium nitrate (0.71 mol N m
−2
) to intensive grassland swards (grazed at 2.74 or 2.05 livestock units ha
−1
year
−1
) at a site in Southern Ireland. The
15
N labelled fertiliser (NO
3
moiety
15
N labelled at 60 at. %) was applied to designated soil areas in the field, enclosed by static chambers, in June 2009, September 2009 and March 2010. Fluxes of N
2
O and N
2
were determined over 12 days on each occasion. N
2
O and N
2
emissions were significantly (
P
|
|---|---|
| ISSN: | 1385-1314 1573-0867 |
| DOI: | 10.1007/s10705-012-9541-x |