Gross nitrogen transformations and related N2O emissions in uncultivated and cultivated black soil

Li, Ping; Lang, Man

doi:10.1007/s00374-013-0848-9

Cited by 44 publications

(26 citation statements)

References 54 publications

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“…Stable isotope enrichment approaches should be applied to identify N 2 O production during different processes following application of 15 N-labelled NH 4 + or NO 3 − and 18 O-labelled H 2 O and NO 3 − in short-term experiments (Cheng et al 2014;Li and Lang 2014;Zhu et al 2013). Zhu et al (2013) carried out a dual labelling approach that employed an 18 O-, 15 N-enrichment method for distinguishing among nitrous oxide (N 2 O) production from nitrifier nitrification, nitrifier denitrification and heterotrophic denitrification.…”

Section: Discussionmentioning

confidence: 99%

Nitrogen fertiliser-induced changes in N2O emissions are attributed more to ammonia-oxidising bacteria rather than archaea as revealed using 1-octyne and acetylene inhibitors in two arable soils

et al. 2016

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Nitrification is believed to be one of the major sources of N 2 O production emitted from soil. Previous studies showed that both ammonia-oxidising bacteria (AOB) and archaea (AOA) can produce N 2 O via nitrification but their relative contributions are still poorly defined. Here, we used acetylene, an inhibitor of AOB and AOA ammonia monooxygenase (AMO), and 1-octyne, a selective inhibitor that specifically inhibits AOB AMO, to investigate how AOB versus AOA contribute to N 2 O emissions in two distinct arable soils. Soil amended with ammonium (NH 4 + ) increased N 2 O emissions to a greater extent than nitrate (NO 3 − ), and acetylene had a greater impact on N 2 O emissions in NH 4 + -treated soils than that in NO 3 − -amended soils, which indicated that nitrification was the dominant N 2 O emitting process in these two arable soils. In the alluvial and red soil, the percentage of evolved N 2 O after application of NH 4 + by AOB were 70.5~78.1 % and 18.7~19.7 % by AOA, respectively. Quantitative PCR revealed that NH 4 + addition stimulated AOB growth, and the growth could be significantly inhibited by acetylene or 1-octyne in the two soils. The stimulation of N 2 O emissions by NH 4 + and the relative suppression by inhibitors paralleled fluctuations in the AOB growth. In addition, cumulative N 2 O emissions were not correlated with AOA abundance in the two soils. Our results revealed that AOB could contribute more to soil N 2 O production than AOA in the NH 4 + -amended arable soils.

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Section: Discussionmentioning

confidence: 99%

Nitrogen fertiliser-induced changes in N2O emissions are attributed more to ammonia-oxidising bacteria rather than archaea as revealed using 1-octyne and acetylene inhibitors in two arable soils

et al. 2016

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“…N 2 O emissions following fertilization with ammonium nitrate (NH 4 NO 3 ) may be greater than from urea fertilizer because of the greater susceptibility to denitrification (Harrison and Webb, 2001). The amount and form of N inputs primarily govern N 2 O emissions, with further impacts resulting from climatic factors, such as temperature and precipitation, and soil factors, such as C availability and microbial community structure (Harrison and Webb, 2001;Müller et al, 2003;Stark and Richards, 2008;Laughlin et al, 2009;Li and Lang, 2014). However, the impact of elevated soil temperature on N 2 O production, in semi-natural grasslands is unclear (Peterjohn et al, 1994;Bijoor et al, 2008;Larsen et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Long-term elevation of temperature affects organic N turnover and associated N<sub>2</sub>O emissions in a permanent grassland soil

Jansen-Willems

Lanigan

Clough

et al. 2016

SOIL

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Abstract. Over the last century an increase in mean soil surface temperature has been observed, and it is predicted to increase further in the future. In order to evaluate the legacy effects of increased temperature on both nitrogen (N) transformation rates in the soil and nitrous oxide (N 2 O) emissions, an incubation experiment and modelling approaches were combined. Based on previous observations that gross N transformations in soils are affected by long-term elevated-temperature treatments we hypothesized that any associated effects on gaseous N emissions (e.g. N 2 O) can be confirmed by a change in the relative emission rates from various pathways. Soils were taken from a long-term in situ warming experiment on temperate permanent grassland. In this experiment the soil temperature was elevated by 0 (control), 1, 2 or 3 • C (four replicates per treatment) using IR (infrared) lamps over a period of 6 years. The soil was subsequently incubated under common conditions (20 • C and 50 % humidity) and labelled as NO ) and NO − 3 contents were higher in soil subjected to the +2 and +3 • C temperature elevations (preand post-incubation). Analyses of N transformations using a 15 N tracing model showed that, following incubation, gross organic (but not inorganic) N transformation rates decreased in response to the prior soil warming treatment. This was also reflected in reduced N 2 O emissions associated with organic N oxidation and denitrification. Furthermore, a newly developed source-partitioning model showed the importance of oxidation of organic N as a source of N 2 O. In conclusion, long-term soil warming can cause a legacy effect which diminishes organic N turnover and the release of N 2 O from organic N and denitrification.

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“…Although this enzyme activity has not been measured in our experiment, we speculate that it could have occurred mainly in NT plots. At the end of 2 nd period (April), the decrease in WFPS (<50%), favouring aerobic conditions, together with the low content of soil NH 4 + seem to indicate that nitrification might be also a significant source of N 2 O (Li and Lang, 2014), especially in MT and CT systems.…”

Section: N 2 O and Ch 4 Emissionsmentioning

confidence: 99%

“…In addition, significant differences in N 2 O fluxes were found among tillage systems especially for the 2 nd and 3 rd period. In both periods, different conditions for nitrification and denitrification, which interacted with tillage, were responsible for soil N transformations and N 2 O losses (Li and Lang, 2014). Barton et al (2013) indicated that in legume-cereal rotation, nitrification rather than denitrification was the main source of N 2 O under semiarid conditions in Australia.…”

Section: N 2 O and Ch 4 Emissionsmentioning

confidence: 99%

Greenhouse gas emissions in conservation and conventional agriculture systems under rainfed mediterranean agro-ecosystem

Río¹

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Gross nitrogen transformations and related N2O emissions in uncultivated and cultivated black soil

Cited by 44 publications

References 54 publications

Nitrogen fertiliser-induced changes in N2O emissions are attributed more to ammonia-oxidising bacteria rather than archaea as revealed using 1-octyne and acetylene inhibitors in two arable soils

Nitrogen fertiliser-induced changes in N2O emissions are attributed more to ammonia-oxidising bacteria rather than archaea as revealed using 1-octyne and acetylene inhibitors in two arable soils

Long-term elevation of temperature affects organic N turnover and associated N<sub>2</sub>O emissions in a permanent grassland soil

Greenhouse gas emissions in conservation and conventional agriculture systems under rainfed mediterranean agro-ecosystem

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Gross nitrogen transformations and related N2O emissions in uncultivated and cultivated black soil

Cited by 44 publications

References 54 publications

Nitrogen fertiliser-induced changes in N2O emissions are attributed more to ammonia-oxidising bacteria rather than archaea as revealed using 1-octyne and acetylene inhibitors in two arable soils

Nitrogen fertiliser-induced changes in N2O emissions are attributed more to ammonia-oxidising bacteria rather than archaea as revealed using 1-octyne and acetylene inhibitors in two arable soils

Long-term elevation of temperature affects organic N turnover and associated N&lt;sub&gt;2&lt;/sub&gt;O emissions in a permanent grassland soil

Greenhouse gas emissions in conservation and conventional agriculture systems under rainfed mediterranean agro-ecosystem

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Long-term elevation of temperature affects organic N turnover and associated N<sub>2</sub>O emissions in a permanent grassland soil