Using nitrification inhibitors to mitigate agricultural N2 O emission : a double-edged sword?

© 2016 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 23(2017), 2 vom: 13. Feb., Seite 485-489
1. Verfasser: Lam, Shu Kee (VerfasserIn)
Weitere Verfasser: Suter, Helen, Mosier, Arvin R, Chen, Deli
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article agriculture ammonia climate change mitigation indirect greenhouse gas nitrification inhibitor nitrous oxide Fertilizers Nitrous Oxide K50XQU1029
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520 |a Nitrification inhibitors show promise in decreasing nitrous oxide (N2 O) emission from agricultural systems worldwide, but they may be much less effective than previously thought when both direct and indirect emissions are taken into account. Whilst nitrification inhibitors are effective at decreasing direct N2 O emission and nitrate (NO3- ) leaching, limited studies suggest that they may increase ammonia (NH3 ) volatilization and, subsequently, indirect N2 O emission. These dual effects are typically not considered when evaluating the inhibitors as a climate change mitigation tool. Here, we collate results from the literature that simultaneously examined the effects of nitrification inhibitors on N2 O and NH3 emissions. We found that nitrification inhibitors decreased direct N2 O emission by 0.2-4.5 kg N2 O-N ha-1 (8-57%), but generally increased NH3 emission by 0.2-18.7 kg NH3 -N ha-1 (3-65%). Taking into account the estimated indirect N2 O emission from deposited NH3 , the overall impact of nitrification inhibitors ranged from -4.5 (reduction) to +0.5 (increase) kg N2 O-N ha-1 . Our results suggest that the beneficial effect of nitrification inhibitors in decreasing direct N2 O emission can be undermined or even outweighed by an increase in NH3 volatilization 
650 4 |a Journal Article 
650 4 |a agriculture 
650 4 |a ammonia 
650 4 |a climate change mitigation 
650 4 |a indirect greenhouse gas 
650 4 |a nitrification inhibitor 
650 4 |a nitrous oxide 
650 7 |a Fertilizers  |2 NLM 
650 7 |a Nitrous Oxide  |2 NLM 
650 7 |a K50XQU1029  |2 NLM 
700 1 |a Suter, Helen  |e verfasserin  |4 aut 
700 1 |a Mosier, Arvin R  |e verfasserin  |4 aut 
700 1 |a Chen, Deli  |e verfasserin  |4 aut 
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773 1 8 |g volume:23  |g year:2017  |g number:2  |g day:13  |g month:02  |g pages:485-489 
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