Isotopomer analysis of production, consumption and soil-to-atmosphere emission processes of N2O at the beginning of paddy field irrigation

Yano, M.; Toyoda, Sakae; Tokida, Takeshi; Hayashi, Kentaro; Hasegawa, Toshihiro; Makabe, Akiko; Koba, Keisuke; Yoshida, Naohiro

doi:10.1016/j.soilbio.2013.11.026

Cited by 53 publications

(43 citation statements)

References 110 publications

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“…Similar to other studies, our previous work on denitrification estimated  from a Rayleigh model (Barford et al, 1999;30 Lewicka-Szczebak et al, 2014;Sutka et al, 2006;Toyoda et al, 2005;Yano et al, 2014). However, the Rayleigh model (Figures 2, 3).…”

Section: Discussionsupporting

confidence: 81%

Estimation of isotopologue variation of N2O during denitrification by Pseudomonas aureofaciens and Pseudomonas chlororaphis: Implications for N2O source apportionment

Haslun¹,

Ostrom²,

Hegg³

et al. 2017

Preprint

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Abstract. Soil microbial processes, stimulated by agricultural fertilization, account for 90 % of anthropogenic nitrous oxide 10 (N2O), the leading source of ozone depletion and a potent greenhouse gas. Efforts to reduce N2O flux commonly focus on reducing fertilization rates. Management of microbial processes responsible for N2O production may also be used to reduce N2O emissions, but this requires knowledge of the prevailing process. To this end, stable isotopes of N2O have been applied

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Section: Discussionsupporting

confidence: 81%

Estimation of isotopologue variation of N2O during denitrification by Pseudomonas aureofaciens and Pseudomonas chlororaphis: Implications for N2O source apportionment

Haslun¹,

Ostrom²,

Hegg³

et al. 2017

Preprint

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“…However, with proper timing of fertilizer application and irrigation, N 2 O emissions are low (Furukawa et al 2007) and would not offset CH 4 emission reductions from AWD in terms of GWP (TirolPadre et al 2017). Both nitrification and denitrification processes are influenced by soil moisture (Davidson and Swank 1986) so that the greater the soil moisture, the greater will be the N 2 O emission (Baggs et al 2000;Yano et al 2014). However, N 2 O production decreases under very high moisture contents.…”

Section: Effects Of Cs and Water Management On Ghg Emissionmentioning

confidence: 99%

Impacts of alternate wetting and drying on greenhouse gas emission from paddy field in Central Vietnam

Tran

Hoang

Tokida

et al. 2017

Soil Science and Plant Nutrition

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Vietnam is the world's fifth largest rice producing country. Since methane (CH 4 ), a potent greenhouse gas (GHG), emission from the rice cultivation accounts for 14.6% of the national anthropogenic GHG emission, developing and disseminating mitigation options are the urgent need. Alternate wetting and drying (AWD) is the irrigation technique, in which a paddy field encompasses several soil-drying phases during the growth period, thereby reducing the CH 4 emission. However, field trials of the AWD's feasibility in Central Vietnam are limited so far. We therefore carried out a 3-year experiment in a farmer's field both in winter-spring season and summer-autumn season. CH 4 and nitrous oxide (N 2 O) emissions were compared among the three treatments of water management: continuous flooding (CF), AWD, and site-specific AWD (AWDS) that changed the degree of soil drying depending on the growth stage. The total water use including irrigation and rainfall was significantly (p < 0.05) reduced by AWD (by 15%) and AWDS (by 14%) compared to CF, but rice grain yield did not differ among the three treatments. The seasonal cumulative CH 4 emission was significantly reduced by AWD (26%) and AWDS (26%) compared to CF, whereas the seasonal cumulative N 2 O emission did not differ among treatments. The resultant global warming potentials (GWPs) of CH 4 and N 2 O under AWD and AWDS were 26% and 29% smaller than that under CF, respectively. The GWP of N 2 O was only 0.8% of the total GWP of CH 4 + N 2 O. The yield-scaled GWP and water productivity (i.e., the ratio of grain yield to water use) were also improved by AWD and AWDS. No significant differences in the measured items between AWD and AWDS were attributed to similar variation patterns in the surface water level. The results confirm the AWD's performance as a mitigation option for paddy GHG emission in Central Vietnam. ARTICLE HISTORY

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“…These phenomena are difficult to study because of the limitations imposed by conventional low frequency sampling techniques. For example, transient weather phenomena -such as rainfall events, atmospheric pressure variations, or changes in wind speed -can profoundly alter soil-atmosphere fluxes by affecting gas transport processes (Tokida et al, 2007;Yano et al, 2014;Redeker et al, 2015) or rates of biological activity (Groffman et al, 2009;Liptzin et al, 2011;Heinemeyer et al, 2012;Yano et al, 2014). Diurnal fluctuations in temperature, moisture, irradiance, or atmospheric conditions can also modulate trace gas fluxes through direct or indirect effects on the metabolic activity of plants and microorganisms (Subke and Bahn, 2010;Baldocchi et al, 2012;Hatala et al, 2012;Wang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Rhizosphere activity and atmospheric methane concentrations drive variations of methane fluxes in a temperate forest soil

Subke

Moody

Hill

et al. 2018

Soil Biology and Biochemistry

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A B S T R A C TAerated soils represent an important sink for atmospheric methane (CH 4 ), due to the effect of methanotrophic bacteria, thus mitigating current atmospheric CH 4 increases. Whilst rates of CH 4 oxidation have been linked to types of vegetation cover, there has been no systematic investigation of the interaction between plants and soil in relation to the strength of the soil CH 4 sink. We used quasi-continuous automated chamber measurements of soil CH 4 and CO 2 flux from soil collar treatments that selectively include root and ectomycorrhizal (ECM) mycelium to investigate the role of rhizosphere activity as well as the effects of other environmental drivers on CH 4 uptake in a temperate coniferous forest soil. We also assessed the potential impact of measurement bias from sporadic chamber measurements in altering estimates of soil CO 2 efflux and CH 4 uptake. Results show a clear effect of the presence of live roots and ECM mycelium on soil CO 2 efflux and CH 4 uptake. The presence of ECM hyphae alone (without plant roots) showed intermediate fluxes of both CO 2 and CH 4 relative to soils that either contained roots and ECM mycelium, or soil lacking root-and ECM mycelium. Regression analysis confirmed a significant influence of soil moisture as well as temperature on flux dynamics of both CH 4 and CO 2 flux. We further found a surprising increase in soil CH 4 uptake during the night, and discuss diurnal fluctuations in atmospheric CH 4 (with higher concentrations during stable atmospheric conditions at night) as a potential driver of CH 4 oxidation rates. Using the high temporal resolution of our data set, we show that low-frequency sampling results in systematic bias of up-scaled flux estimates, resulting in under-estimates of up to 20% at our study site, due to fluctuations in flux dynamics on diurnal as well as longer time scales.

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Isotopomer analysis of production, consumption and soil-to-atmosphere emission processes of N2O at the beginning of paddy field irrigation

Cited by 53 publications

References 110 publications

Estimation of isotopologue variation of N<sub>2</sub>O during denitrification by <i>Pseudomonas aureofaciens</i> and <i>Pseudomonas</i> chlororaphis: Implications for N<sub>2</sub>O source apportionment

Estimation of isotopologue variation of N<sub>2</sub>O during denitrification by <i>Pseudomonas aureofaciens</i> and <i>Pseudomonas</i> chlororaphis: Implications for N<sub>2</sub>O source apportionment

Impacts of alternate wetting and drying on greenhouse gas emission from paddy field in Central Vietnam

Rhizosphere activity and atmospheric methane concentrations drive variations of methane fluxes in a temperate forest soil

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Isotopomer analysis of production, consumption and soil-to-atmosphere emission processes of N2O at the beginning of paddy field irrigation

Cited by 53 publications

References 110 publications

Estimation of isotopologue variation of N&lt;sub&gt;2&lt;/sub&gt;O during denitrification by &lt;i&gt;Pseudomonas aureofaciens&lt;/i&gt; and &lt;i&gt;Pseudomonas&lt;/i&gt; chlororaphis: Implications for N&lt;sub&gt;2&lt;/sub&gt;O source apportionment

Estimation of isotopologue variation of N&lt;sub&gt;2&lt;/sub&gt;O during denitrification by &lt;i&gt;Pseudomonas aureofaciens&lt;/i&gt; and &lt;i&gt;Pseudomonas&lt;/i&gt; chlororaphis: Implications for N&lt;sub&gt;2&lt;/sub&gt;O source apportionment

Impacts of alternate wetting and drying on greenhouse gas emission from paddy field in Central Vietnam

Rhizosphere activity and atmospheric methane concentrations drive variations of methane fluxes in a temperate forest soil

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Estimation of isotopologue variation of N<sub>2</sub>O during denitrification by <i>Pseudomonas aureofaciens</i> and <i>Pseudomonas</i> chlororaphis: Implications for N<sub>2</sub>O source apportionment

Estimation of isotopologue variation of N<sub>2</sub>O during denitrification by <i>Pseudomonas aureofaciens</i> and <i>Pseudomonas</i> chlororaphis: Implications for N<sub>2</sub>O source apportionment