Wavelet analysis of wintertime and spring thaw CO2 and N2O fluxes from agricultural fields

Furon, Adriana C.; Wagner-Riddle, Claudia; Smith, Carleigh; Warland, J.

doi:10.1016/j.agrformet.2008.03.006

Cited by 58 publications

(37 citation statements)

References 52 publications

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“…However, Hentschel et al (2009) found that moderate soil freezing did not affect solute losses of N, DOC, and mineral ions from temperate forest soils, and argued that their results did not support the hypothesis that N 2 O peak fluxes are caused by the enhanced nutrient supply from soil freezing (Goldberg et al, 2010b). While it has been argued that N 2 O peak flux at spring thaw was mostly produced in the surface layer (Müller et al, 2002;Furon et al, 2008;Wagner-Riddle et al, 2008), Goldberg et al (2010b) found that released N 2 O in soil thawing was due to a slow release of subsoil N 2 O and a delayed activation of N 2 O reductase in the topsoil after soil frost due to low soil temperatures.…”

Section: Nitrous Oxidementioning

confidence: 81%

Effects of soil rewetting and thawing on soil gas fluxes: a review of current literature and suggestions for future research

et al. 2012

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Abstract. The rewetting of dry soils and the thawing of frozen soils are short-term, transitional phenomena in terms of hydrology and the thermodynamics of soil systems. The impact of these short-term phenomena on larger scale ecosystem fluxes is increasingly recognized, and a growing number of studies show that these events affect fluxes of soil gases such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), ammonia (NH3) and nitric oxide (NO). Global climate models predict that future climatic change is likely to alter the frequency and intensity of drying-rewetting events and thawing of frozen soils. These future scenarios highlight the importance of understanding how rewetting and thawing will influence dynamics of these soil gases. This study summarizes findings using a new database containing 338 studies conducted from 1956 to 2011, and highlights open research questions. The database revealed conflicting results following rewetting and thawing in various terrestrial ecosystems and among soil gases, ranging from large increases in fluxes to non-significant changes. Studies reporting lower gas fluxes before rewetting tended to find higher post-rewetting fluxes for CO2, N2O and NO; in addition, increases in N2O flux following thawing were greater in warmer climate regions. We discuss possible mechanisms and controls that regulate flux responses, and recommend that a high temporal resolution of flux measurements is critical to capture rapid changes in gas fluxes after these soil perturbations. Finally, we propose that future studies should investigate the interactions between biological (i.e., microbial community and gas production) and physical (i.e., porosity, diffusivity, dissolution) changes in soil gas fluxes, apply techniques to capture rapid changes (i.e., automated measurements), and explore synergistic experimental and modelling approaches.

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Section: Nitrous Oxidementioning

confidence: 81%

Effects of soil rewetting and thawing on soil gas fluxes: a review of current literature and suggestions for future research

et al. 2012

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“…It can be hypothesized that in partly frozen soils access to substrate, as mainly driven by water availability, is more determinant to microbial activities than the actual temperature, as observed by Öquist et al (2007). High N 2 O emission rates have been reported during soil freeze-thaw events in early winter and spring (Wagner-Riddle et al, 1997;Rover et al, 1998;Furon et al, 2008;Virkajärvi et al, 2010). The chosen sampling date interval did not permit to observe freeze-thaw induced N 2 O, which may be short (Christensen and Tiedje, 1990).…”

Section: Discussionmentioning

confidence: 95%

Influences of over winter conditions on denitrification and nitrous oxide-producing microorganism abundance and structure in an agricultural soil amended with different nitrogen sources

Tatti

Goyer

Chantigny

et al. 2014

Agriculture, Ecosystems & Environment

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“…The loss of CH 4 from animals is not only an environmental concern. Methane emissions represent an energetic loss that impacts on profitability of livestock production through reduced feed conversion efficiency (Moe and Tyrrell 1979;France and Kebreab 2008). The amount of CH 4 produced by an animal is influenced by many factors including dietary factors such as type of carbohydrate in the diet, level of feed intake, and degree of saturation of lipids in the diet .…”

Section: Enteric Fermentationmentioning

confidence: 99%

Beneficial management practices and mitigation of greenhouse gas emissions in the agriculture of the Canadian Prairie: a review

Asgedom

Kebreab

2011

Agronomy Sust. Developm.

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Wavelet analysis of wintertime and spring thaw CO2 and N2O fluxes from agricultural fields

Cited by 58 publications

References 52 publications

Effects of soil rewetting and thawing on soil gas fluxes: a review of current literature and suggestions for future research

Effects of soil rewetting and thawing on soil gas fluxes: a review of current literature and suggestions for future research

Influences of over winter conditions on denitrification and nitrous oxide-producing microorganism abundance and structure in an agricultural soil amended with different nitrogen sources

Beneficial management practices and mitigation of greenhouse gas emissions in the agriculture of the Canadian Prairie: a review

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