How inhibiting nitrification affects nitrogen cycle and reduces environmental impacts of anthropogenic nitrogen input

How inhibiting nitrification affects nitrogen cycle and reduces environmental impacts of anthropogenic nitrogen input

© 2014 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 21(2015), 3 vom: 02. März, Seite 1249-57
1. Verfasser: Qiao, Chunlian (VerfasserIn)
Weitere Verfasser: Liu, Lingli, Hu, Shuijin, Compton, Jana E, Greaver, Tara L, Li, Quanlin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Meta-Analysis Research Support, Non-U.S. Gov't N2O emission NH3 emission NO emission cost-benefit analysis ecosystem services nitrogen fertilizer nitrogen leaching mehr... nitrogen management Fertilizers Soil Nitrogen N762921K75
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520 |a Anthropogenic activities, and in particular the use of synthetic nitrogen (N) fertilizer, have doubled global annual reactive N inputs in the past 50-100 years, causing deleterious effects on the environment through increased N leaching and nitrous oxide (N2 O) and ammonia (NH3 ) emissions. Leaching and gaseous losses of N are greatly controlled by the net rate of microbial nitrification. Extensive experiments have been conducted to develop ways to inhibit this process through use of nitrification inhibitors (NI) in combination with fertilizers. Yet, no study has comprehensively assessed how inhibiting nitrification affects both hydrologic and gaseous losses of N and plant nitrogen use efficiency. We synthesized the results of 62 NI field studies and evaluated how NI application altered N cycle and ecosystem services in N-enriched systems. Our results showed that inhibiting nitrification by NI application increased NH3 emission (mean: 20%, 95% confidential interval: 33-67%), but reduced dissolved inorganic N leaching (-48%, -56% to -38%), N2 O emission (-44%, -48% to -39%) and NO emission (-24%, -38% to -8%). This amounted to a net reduction of 16.5% in the total N release to the environment. Inhibiting nitrification also increased plant N recovery (58%, 34-93%) and productivity of grain (9%, 6-13%), straw (15%, 12-18%), vegetable (5%, 0-10%) and pasture hay (14%, 8-20%). The cost and benefit analysis showed that the economic benefit of reducing N's environmental impacts offsets the cost of NI application. Applying NI along with N fertilizer could bring additional revenues of $163 ha(-1)  yr(-1) for a maize farm, equivalent to 8.95% increase in revenues. Our findings showed that NIs could create a win-win scenario that reduces the negative impact of N leaching and greenhouse gas production, while increases the agricultural output. However, NI's potential negative impacts, such as increase in NH3 emission and the risk of NI contamination, should be fully considered before large-scale application 
650 4 |a Journal Article 
650 4 |a Meta-Analysis 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a N2O emission 
650 4 |a NH3 emission 
650 4 |a NO emission 
650 4 |a cost-benefit analysis 
650 4 |a ecosystem services 
650 4 |a nitrogen fertilizer 
650 4 |a nitrogen leaching 
650 4 |a nitrogen management 
650 7 |a Fertilizers  |2 NLM 
650 7 |a Soil  |2 NLM 
650 7 |a Nitrogen  |2 NLM 
650 7 |a N762921K75  |2 NLM 
700 1 |a Liu, Lingli  |e verfasserin  |4 aut 
700 1 |a Hu, Shuijin  |e verfasserin  |4 aut 
700 1 |a Compton, Jana E  |e verfasserin  |4 aut 
700 1 |a Greaver, Tara L  |e verfasserin  |4 aut 
700 1 |a Li, Quanlin  |e verfasserin  |4 aut 
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773 1 8 |g volume:21  |g year:2015  |g number:3  |g day:02  |g month:03  |g pages:1249-57 
856 4 0 |u http://dx.doi.org/10.1111/gcb.12802  |3 Volltext 
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