Nitrous oxide emissions from agricultural soils at low temperatures: a laboratory microcosm study

Koponen, Hanna; Flöjt, Laura; Martikainen, P.J.

doi:10.1016/j.soilbio.2003.12.011

Cited by 64 publications

(47 citation statements)

References 32 publications

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“…N 2 O emissions showed no significant correlation with the soil temperatures either at the surface or at a 15-cm depth, which was consistent with the findings of Koponen et al who found that N 2 O emissions were not related to soil temperature [71]. The flux of N 2 O is driven by its rates of production and consumption.…”

Section: N 2 O Fluxsupporting

confidence: 89%

The Emissions of Carbon Dioxide, Methane, and Nitrous Oxide during Winter without Cultivation in Local Saline-Alkali Rice and Maize Fields in Northeast China

et al. 2017

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Agricultural ecosystems are important contributors to atmospheric greenhouse gasses (GHGs); however, in situ winter emission data in saline-alkali fields are scarce. Gas samples were collected during different periods, from three rice (R1-R3) and three maize (M1-M3) fields with different soil pH levels and salinity conditions. Carbon dioxide (CO 2 ) emissions in the rice and maize fields decreased with decreasing temperature during the freezing period and increased with the rising temperature during the thawing period, with the majority of winter CO 2 emissions occurring during these two periods. Peaks in methane (CH 4 ) emissions were observed during the freezing period in the rice fields and during the snow-melting period in the rice and maize fields. CH 4 emissions in the rice fields and CH 4 uptake rates in the maize fields were significantly (P < 0.05) related to surface soil temperature. Nitrous oxide (N 2 O) emissions remained relatively low, except for during the peaks observed during the snow-melting period in both the rice and maize fields, leading to the high GHG contribution of the snow-melting period throughout the winter. Higher pH and salinity conditions consistently resulted in lower CO 2 , CH 4 , and N 2 O emissions, CH 4 uptake, and lower global warming potential (GWP). These results can contribute to the assessment of the GWP during winter in saline-alkali regions.

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Section: N 2 O Fluxsupporting

confidence: 89%

The Emissions of Carbon Dioxide, Methane, and Nitrous Oxide during Winter without Cultivation in Local Saline-Alkali Rice and Maize Fields in Northeast China

et al. 2017

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“…Freeze-thaw peaks in N 2 O emissions have been well documented in laboratory and in field studies in boreal region (Koponen et al, 2004(Koponen et al, , 2006Öquist et al, 2004;Regina et al, 2004). Still most of the field measurements have been conducted with weekly to fortnightly manual chamber measurements, thus potentially missing or at least underestimating freeze-thaw driven N 2 O pulses (Groffman et al, 2006).…”

Section: N 2 O Fluxesmentioning

confidence: 99%

“…Matzner and Borken, 2008;Papen and Butterbach-Bahl, 1999), such as frost-thaw periods which could be substantial in boreal environments (see e.g. Koponen et al, 2004Koponen et al, , 2006. As a result, calculations of seasonal or annual budgets of greenhouse gases may be biased and potentially underestimated if the frequency of measurements or spatial coverage is not sufficient to cover variations.…”

mentioning

confidence: 99%

Greenhouse gas fluxes in a drained peatland forest during spring frost-thaw event

et al. 2010

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Abstract. Fluxes of greenhouse gases (GHG) carbon dioxide (CO 2 ), methane (CH 4 ) and nitrous oxide (N 2 O) were measured during a two month campaign at a drained peatland forest in Finland by the eddy covariance (EC) technique (CO 2 and N 2 O), and automatic and manual chambers (CO 2 , CH 4 and N 2 O). In addition, GHG concentrations and soil parameters (mineral nitrogen, temperature, moisture content) in the peat profile were measured. The aim of the measurement campaign was to quantify the GHG fluxes during freezing and thawing of the top-soil, a time period with potentially high GHG fluxes, and to compare different flux measurement methods. The forest was a net CO 2 sink during the two months and the fluxes of CO 2 dominated the GHG exchange. The peat soil was a small sink of atmospheric CH 4 and a small source of N 2 O. Both CH 4 oxidation and N 2 O production took place in the top-soil whereas CH 4 was produced in the deeper layers of the peat, which were unfrozen throughout the measurement period. During the frost-thaw events of the litter layer distinct peaks in CO 2 and N 2 O emissions were observed. The CO 2 peak followed tightly the increase in soil temperature, whereas the N 2 O peak occurred with a delay after the thawing of the litter layer. CH 4 fluxesCorrespondence to: M. K. Pihlatie (mari.pihlatie@helsinki.fi) did not respond to the thawing of the peat soil. The CO 2 and N 2 O emission peaks were not captured by the manual chambers and hence we conclude that high time-resolution measurements with automatic chambers or EC are necessary to quantify fluxes during peak emission periods. Subcanopy EC measurements and chamber-based fluxes of CO 2 and N 2 O were comparable, although the fluxes of N 2 O measured by EC were close to the detection limit of the system. We conclude that if fluxes are high enough, i.e. greater than 5-10 µg N m −2 h −1 , the EC method is a good alternative to measure N 2 O and CO 2 fluxes at ecosystem scale, thereby minimizing problems with chamber enclosures and spatial representativeness of the measurements.

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“…Chen et al (1995) have discerned from soil core studies that soil N 2 O emissions increase significantly with the number of freeze-thaw cycles. Other studies have confirmed the impact that freeze-thaw cycles have on N 2 O emissions through the disruption of soil structure, which, in turn, releases substrates and stimulates denitrification Ro¨ver et al 1998;Prieme´and Christensen 2001;Teepe et al 2001;Mu¨ller et al 2002;Maljanen et al 2003;Koponen et al 2004;Merino et al 2004).…”

Section: Mots Clé S: Emissions D'oxyde Nitreux Le´gumineuses Fonte mentioning

confidence: 86%

“…A few studies have reported fluxes of two orders of magnitude greater during the spring thaw than during any other time of the year (Christensen and Tiedje 1990;Chen et al 1995). Explanations for the enhanced emissions after snowmelt include a physical release of the N 2 O that was trapped beneath ice sheets or a frozen soil layer (Goodroad and Keeney 1984;Burton and Beauchamp 1994;Kaiser et al 1998;Ro¨ver et al 1998;Teepe et al 2000Teepe et al , 2001Koponen et al 2004;Pattey et al 2007), an increase in substrate availability for denitrification and microbial activity, and chemical N 2 O production (Koponen et al 2004;Christianson and Cho 1983;Ro¨ver et al 1998). Chen et al (1995) have discerned from soil core studies that soil N 2 O emissions increase significantly with the number of freeze-thaw cycles.…”

Section: Mots Clé S: Emissions D'oxyde Nitreux Le´gumineuses Fonte mentioning

confidence: 99%

Spring thaw and growing season N₂O emissions from a field planted with edible peas and a cover crop

Pattey¹,

Blackburn²,

Strachan³

et al. 2008

Can. J. Soil. Sci.

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(1 during the initial snowmelt period following corn harvest were lower than expected. Sustained and small N 2 O emissions totalling 1.7 kg N 2 O-N ha(1 were observed during the growing season of the pea crop. Solid cattle manure applied after the pea harvest generated the largest N 2 O emissions (1.9 kg N 2 O-N ha(1 over 10 d) observed during the entire sampling period. N 2 O emissions associated with the cover crop in the fall were mostly influenced by manure application and totalled 0.8 kg N 2 O-N ha (1 . For the subsequent spring thaw period, N 2 O emissions were 0.8 kg N 2 O-N ha (1 . This represents approximately 15% of the annual emissions for the edible pea-cover crop system, which totalled 5.6 kg N 2 O-N ha(1 over the measuring periods. There was little difference in spring thaw N 2 O emissions between the two growing seasons of corn and edible pea-cover crop.

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Nitrous oxide emissions from agricultural soils at low temperatures: a laboratory microcosm study

Cited by 64 publications

References 32 publications

The Emissions of Carbon Dioxide, Methane, and Nitrous Oxide during Winter without Cultivation in Local Saline-Alkali Rice and Maize Fields in Northeast China

The Emissions of Carbon Dioxide, Methane, and Nitrous Oxide during Winter without Cultivation in Local Saline-Alkali Rice and Maize Fields in Northeast China

Greenhouse gas fluxes in a drained peatland forest during spring frost-thaw event

Spring thaw and growing season N₂O emissions from a field planted with edible peas and a cover crop

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Nitrous oxide emissions from agricultural soils at low temperatures: a laboratory microcosm study

Cited by 64 publications

References 32 publications

The Emissions of Carbon Dioxide, Methane, and Nitrous Oxide during Winter without Cultivation in Local Saline-Alkali Rice and Maize Fields in Northeast China

The Emissions of Carbon Dioxide, Methane, and Nitrous Oxide during Winter without Cultivation in Local Saline-Alkali Rice and Maize Fields in Northeast China

Greenhouse gas fluxes in a drained peatland forest during spring frost-thaw event

Spring thaw and growing season N2O emissions from a field planted with edible peas and a cover crop

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Spring thaw and growing season N₂O emissions from a field planted with edible peas and a cover crop