Microbial induced nitrous oxide emissions from an arable soil during winter

Röver, Manuela; Heinemeyer, Otto; Kaiser, Ernst‐August

doi:10.1016/s0038-0717(98)00080-7

Cited by 201 publications

(111 citation statements)

References 25 publications

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“…These emission were unexpected given the continuous snow cover and the below-zero soil temperatures. Clearly consideration has to be given in northern prairie soils to the over-winter production of N 2 O documented by authors such as Burton and Beauchamp (1994), Van Bochove et al (1999), and Röver et al (1998) in more temperate northern environments.…”

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 90%

“…The production of N 2 O within the soil during winter has been demonstrated in several studies (Röver et al 1998;Van Bochove et al 2000). Röver et al (1998) observed microbially induced N 2 O production even when soil temperatures were at about -4°C. The rate of microbial N 2 O production during winter may be enhanced by increased carbon or nitrogen availability from the lysis of microbial cells due to freeze-thaw processes (Christensen and Tiedje 1990;Ryan et al 2000).…”

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confidence: 90%

“…The rate of microbial N 2 O production during winter may be enhanced by increased carbon or nitrogen availability from the lysis of microbial cells due to freeze-thaw processes (Christensen and Tiedje 1990;Ryan et al 2000). The timing and rate of release of the winter-produced N 2 O depends in part on its rate of production (Röver et al 1998) but is also highly dependent on the presence of frozen water in soil pore space and the physical characteristics of the snowpack (Burton and Beauchamp 1994;Van Bochove et al 2000).…”

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Upscaling chamber-based measurements of N₂O emissions at snowmelt

Pennock¹,

Farrell²,

Desjardins³

et al. 2005

Can. J. Soil. Sci.

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I. 2005. Upscaling chamber-based measurements of N 2 O emissions at snowmelt. Can. J. Soil Sci. 85: 113-125. One impediment to accurate national estimation of N 2 O is the difficulty in upscaling N 2 O measurements made at discrete points to larger field and regional scales. Our objective was to estimate N 2 O emissions during snowmelt in 2002 for a township (approximately 92 km 2 ) near Laird, Saskatchewan. Chamber measurements were made at 12 sites in the township: four fields with canola (Brassica napus L.) residues, four with pea (Pisum sativum L.) residues, three with wheat (Triticum aestivum L.) residues, and one field that received cattle manure. Ten sampling chambers were used at each site, and N 2 O samples were made on 7 d during the snowmelt period (from 2002 Apr. 03 to Apr. 17). Cumulative N 2 O emissions during the 14 days of the snowmelt period differed between crop residue types: cumulative emissions from sites with wheat residues were 105.6 g N 2 O-N ha -1 and were significantly higher (P < 0.1) than those from fields with pea and canola residues (79.6 and 75.2 g N 2 O-N ha -1 respectively). The single manured site assessed had the highest cumulative emissions of 330.7 g N 2 O-N ha -1 . The crop-specific emissions from the chamber-based measurements were multiplied by the area of each crop type in the township to calculate an area-weighted value for emissions. Cumulative emissions were 93.4 g N 2 O-N ha -1 for the chamber-based measurements. Water-filled pore space and soil temperature were not significantly correlated with cumulative emissions. Cumulative emissions from sites with fall nitrate levels below 8.0 kg ha -1 were consistently lower than those above this threshold. The emissions for the Laird township were well below the emissions calculated for most other studies in the Prairies and in central Canada. The lower emissions were probably due to low soil water contents and soil nitrate levels in the fall of 2001 and belownormal snowfall in the winter of [2001][2002]. This reinforces the importance in antecedent moisture conditions and soil N levels for modeling of emissions at snowmelt. For personal use only.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 90%

mentioning

confidence: 90%

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confidence: 99%

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Upscaling chamber-based measurements of N₂O emissions at snowmelt

Pennock¹,

Farrell²,

Desjardins³

et al. 2005

Can. J. Soil. Sci.

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“…Third, seasonal fluctuation in soil nitrogen is one of the variables that needs to be understood to predict the source(s) and timing of nitrate leaching beneath the root zone (DeLuca and Keeney 1994;Clay et al 1996). Seasonal N dynamics are of further interest in the context of N 2 O emissions from soil (Bochove et al 1996;Beauchamp 1997;Röver et al 1998).…”

Section: Mots Clésmentioning

confidence: 99%

Overwinter soil nitrogen dynamics in seasonally frozen soils

Ryan¹,

Kachanoski²,

Gillham³

2000

Can. J. Soil. Sci.

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An overwinter soil-monitoring study was conducted at two sites in southern Ontario. Soluble soil N accumulation at both sites occured in early winter, peaked when soil water was frozen, and then declined during the period that frozen soil water was present. The amount of soluble soil N accumulated was 48 ± 12 kg N ha−1 at one site, and 21 ± 6 kg N ha−1 at the other. In both cases, the overwinter accumulation approximately doubled the amount of soluble N in the soil. Similar trends were observed in both mineral and organic N, with 60 to 74% of the accumulation occurring in the organic form. No clear correlations between soluble nitrogen dynamics and soil extractable organic carbon or soil microbial biomass carbon dynamics were observed. Denitrification apparently occurred in shallow soil during the thaw period at one site. Since soil nitrate levels decreased before significant thawing occurred, leaching was probably not the primary dissipation mechanism. We hypothesize that the soluble N accumulation was due to death and lysis of soil microorganims during freezing and thawing. The presence of soil ice apparently decreased the lethality of the soil enviroment, allowing N dissipation to occur. Soil N dissipation could be due to gaseous losses, and is likely related to significant N2O fluxes commonly observed during spring thaw. Key words: Nitrogen, overwinter, soil ice

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Process‐based TRIPLEX‐GHG model for simulating N₂O emissions from global forests and grasslands: Model development and evaluation

Zhang

Peng

Wang

et al. 2017

J Adv Model Earth Syst

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The development of the new process‐based TRIPLEX‐GHG model derives from the Integrated Biosphere Simulator (IBIS), which couples nitrification and denitrification processes to quantify nitrous oxide (N2O) emissions from natural forests and grasslands. Sensitivity analysis indicates that the nitrification rate coefficient (COENR) is the most sensitive parameter to simulate N2O emissions. Accordingly, we calibrated this parameter using data from 29 global forest sites (across different latitudes) and grassland sites. The average nitrification rate coefficient gradually increases in the order of tropical forest to grassland to temperate forest to boreal forest, and giving means of 0.009, 0.03, 0.04, and 0.09, respectively. This study validated the mean value for each ecosystem at 52 sites globally. Calibration results both indicate the good performance of the model and its suitability in capturing seasonal variation and magnitude of N2O flux; however, it is limited in modeling N2O uptake and increments during periods of snowmelt. Additionally, validation results indicate that simulated and observed annual or seasonal N2O fluxes are highly correlated (R2 = 0.75; P < 0.01). Consequently, our results suggest that the model is suitable in simulating N2O emissions from different forest and grassland land types under varying environmental conditions on a global scale.

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Microbial induced nitrous oxide emissions from an arable soil during winter

Cited by 201 publications

References 25 publications

Upscaling chamber-based measurements of N₂O emissions at snowmelt

Upscaling chamber-based measurements of N₂O emissions at snowmelt

Overwinter soil nitrogen dynamics in seasonally frozen soils

Process‐based TRIPLEX‐GHG model for simulating N₂O emissions from global forests and grasslands: Model development and evaluation

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Microbial induced nitrous oxide emissions from an arable soil during winter

Cited by 201 publications

References 25 publications

Upscaling chamber-based measurements of N2O emissions at snowmelt

Upscaling chamber-based measurements of N2O emissions at snowmelt

Overwinter soil nitrogen dynamics in seasonally frozen soils

Process‐based TRIPLEX‐GHG model for simulating N2O emissions from global forests and grasslands: Model development and evaluation

Contact Info

Product

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Upscaling chamber-based measurements of N₂O emissions at snowmelt

Upscaling chamber-based measurements of N₂O emissions at snowmelt

Process‐based TRIPLEX‐GHG model for simulating N₂O emissions from global forests and grasslands: Model development and evaluation