Abiotic nitrous oxide production from hydroxylamine in soils and their dependence on soil properties

Heil, Jannis; Liu, Shurong; Vereecken, Harry; Brüggemann, Nicolas

doi:10.1016/j.soilbio.2015.02.022

Cited by 98 publications

(107 citation statements)

References 47 publications

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“…Assuming that NO 2 -is consistently 21% of the NO 3 -measured in our acidic soil, unbuffered 2 M KCl extractions can underestimate nitrification rates by ~17%. Similarly, accurately measuring NO 2 -is important when determining other soil N pools such as hydroxylamine (Liu et al, 2014), a reactive intermediate during nitrification linked with abiotic mechanisms for gaseous N production (Heil et al, 2015). Because even low soil NO 2 -concentrations (0.001-0.01 mg g -1 ) can lead to substantial N losses via emission of HONO (Su et al, 2011), improved estimates of soil NO 2 -concentrations may help refine global soil reactive N emission models, while furthering understanding of interactions between soil biogeochemistry and atmospheric chemistry (Venterea et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

Improving Nitrite Analysis in Soils: Drawbacks of the Conventional 2 M KCl Extraction

Homyak

Vasquez

Sickman

et al. 2015

Soil Sci. Soc. Am. j.

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Section: Resultsmentioning

confidence: 99%

Improving Nitrite Analysis in Soils: Drawbacks of the Conventional 2 M KCl Extraction

Homyak

Vasquez

Sickman

et al. 2015

Soil Sci. Soc. Am. j.

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“…Highly dynamic emissions of N 2 O were found among different forest soil types [68]. The primary controlling factors of N 2 O production were found to be soil pH and C/N ratio, and these soil properties could explain most of the variability of N 2 O emissions [9,69]. However, we used three stands in our study but the results indicating similar annual N 2 O emissions despite the different soil properties.…”

Section: Factors Affecting Soil Greenhouse Gas Emissionsmentioning

confidence: 88%

Seasonal Variation in Soil Greenhouse Gas Emissions at Three Age-Stages of Dawn Redwood (Metasequoia glyptostroboides) Stands in an Alluvial Island, Eastern China

Yin

Zhang

Pumpanen

et al. 2016

Forests

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Greenhouse gas (GHG) emissions are an important part of the carbon (C) and nitrogen (N) cycle in forest soil. However, soil greenhouse gas emissions in dawn redwood (Metasequoia glyptostroboides) stands of different ages are poorly understood. To elucidate the effect of plantation age and environmental factors on soil GHG emissions, we used static chamber/gas chromatography (GC) system to measure soil GHG emissions in an alluvial island in eastern China for two consecutive years. The soil was a source of CO 2 and N 2 O and a sink of CH 4 with annual emissions of 5.5-7.1 Mg C ha −1 year −1 , 0.15-0.36 kg N ha −1 year −1 , and 1.7-4.5 kg C ha −1 year −1 , respectively. A clear exponential correlation was found between soil temperature and CO 2 emission, but a negative linear correlation was found between soil water content and CO 2 emission. Soil temperature had a significantly positive effect on CH 4 uptake and N 2 O emission, whereas no significant correlation was found between CH 4 uptake and soil water content, and N 2 O emission and soil water content. These results implied that older forest stands might cause more GHG emissions from the soil into the atmosphere because of higher litter/root biomass and soil carbon/nitrogen content compared with younger stands.

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“…For example, the decomposition of hydroxylamine may be more rapid at high soil temperatures, which could explain the increase in P n in the Lucaston experiment. As well, the role of metal ion species in the chemical oxidation of hydroxylamine (Heil et al 2015) and the role of cation exchange capacity on ammonium sorption and nitrite oxidation (Venterea et al 2015) require further investigation. * Land-use history might be important in governing nitrogen cycling and, in addition to the above factors, is probably linked to changes in soil biota in response to more active nitrogen cycling, and longer term legacy effects related to organic matter dynamics.…”

Section: Discussionmentioning

confidence: 99%

“…denitrification by ammonia oxidising bacteria, as proposed by Baggs (2011)) have been implicated, with a key role for nitrite suggested (Mørkved et al 2007). The roles of abiotic factors such as metal ion species, including iron III and manganese II, in the oxidation of hydroxylamine (Hooper and Terry 1979;Bremner et al 1980;Zhu et al 2013b;Heil et al 2015), chemical or thermal decomposition of hydroxylamine, and processes such as nitrifier denitrification under conditions of oxygen stress have not been widely acknowledged or included in models. Consequently, most models adopt a grey-box approach to predicting N 2 O from nitrification, allocating a set proportion of nitrified N to N 2 O emission (P n in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The source of nitrogen also seems to be important, with urine and urea giving higher P n values than ammonium (Carter 2007;Zhu et al 2013a). Recent work has again highlighted other abiotic factors such as metal species (Zhu et al 2013b;Heil et al 2015) as being important determinants of N 2 O emissions from nitrification. In addition, In most agroecosystem models, the nitrification rate is a function of the potential nitrification rate (Kmax), the soil ammonium content (NH 4 + ), and functions of temperature, water and pH.…”

Section: Introductionmentioning

confidence: 99%

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Nitrification rates and associated nitrous oxide emissions from agricultural soils – a synopsis

Farquharson¹

2016

Soil Res.

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Abstract. Laboratory incubations were performed to estimate nitrification rates and the associated nitrous oxide (N 2 O) emissions under aerobic conditions on a range of soils from National Agricultural Nitrous Oxide Research Program field sites. Significant site-to-site variability in nitrification rates and associated N 2 O emissions was observed under standardised conditions, indicating the need for site-specific model parameterisation. Generally, nitrification rates and N 2 O emissions increased with higher water content, ammonium concentration and temperature, although there were exceptions. It is recommended that site-specific model parameterisation be informed by such data. Importantly, the ratio of N 2 O emitted to net nitrified N under aerobic conditions was small (<0.2% for the majority of measurements) but did vary from 0.03% to 1%. Some models now include variation in the proportion of nitrified N emitted as N 2 O as a function of water content; however, strong support for this was not found across all of our experiments, and the results demonstrate a potential role of pH and ammonium availability. Further research into fluctuating oxygen availability and the coupling of biotic and abiotic processes will be required to progress the process understanding of N 2 O emissions from nitrification.

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Abiotic nitrous oxide production from hydroxylamine in soils and their dependence on soil properties

Cited by 98 publications

References 47 publications

Improving Nitrite Analysis in Soils: Drawbacks of the Conventional 2 M KCl Extraction

Improving Nitrite Analysis in Soils: Drawbacks of the Conventional 2 M KCl Extraction

Seasonal Variation in Soil Greenhouse Gas Emissions at Three Age-Stages of Dawn Redwood (Metasequoia glyptostroboides) Stands in an Alluvial Island, Eastern China

Nitrification rates and associated nitrous oxide emissions from agricultural soils – a synopsis

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