Maltais-LandryMarangerBrissonEtAl2009b

Référence

Maltais-Landry, G., Maranger, R., Brisson, J. and Chazarenc, F. (2009) Greenhouse gas production and efficiency of planted and artificially aerated constructed wetlands. Environmental Pollution, 157(3):748-754. (URL )

Résumé

Greenhouse gas (GHG) emissions by constructed wetlands (CWs) could mitigate the environmental benefits of nutrient removal in these man-made ecosystems. We studied the effect of 3 different macrophyte species and artificial aeration on the rates of nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4) production in CW mesocosms over three seasons. CW emitted 2-10 times more GHG than natural wetlands. Overall, CH4 was the most important GHG emitted in unplanted treatments. Oxygen availability through artificial aeration reduced CH4 fluxes. Plant presence also decreased CH4 fluxes but favoured CO2 production. Nitrous oxide had a minor contribution to global warming potential (GWP < 15%). The introduction of oxygen through artificial aeration combined with plant presence, particularly Typha angustifolia, had the overall best performance among the treatments tested in this study, including lowest GWP, greatest nutrient removal, and best hydraulic properties.

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@ARTICLE { Maltais-LandryMarangerBrissonEtAl2009b,
    AUTHOR = { Maltais-Landry, G. and Maranger, R. and Brisson, J. and Chazarenc, F. },
    TITLE = { Greenhouse gas production and efficiency of planted and artificially aerated constructed wetlands },
    JOURNAL = { Environmental Pollution },
    YEAR = { 2009 },
    VOLUME = { 157 },
    PAGES = { 748-754 },
    NUMBER = { 3 },
    MONTH = { mar },
    ABSTRACT = { Greenhouse gas (GHG) emissions by constructed wetlands (CWs) could mitigate the environmental benefits of nutrient removal in these man-made ecosystems. We studied the effect of 3 different macrophyte species and artificial aeration on the rates of nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4) production in CW mesocosms over three seasons. CW emitted 2-10 times more GHG than natural wetlands. Overall, CH4 was the most important GHG emitted in unplanted treatments. Oxygen availability through artificial aeration reduced CH4 fluxes. Plant presence also decreased CH4 fluxes but favoured CO2 production. Nitrous oxide had a minor contribution to global warming potential (GWP < 15%). The introduction of oxygen through artificial aeration combined with plant presence, particularly Typha angustifolia, had the overall best performance among the treatments tested in this study, including lowest GWP, greatest nutrient removal, and best hydraulic properties. },
    ISSN = { 0269-7491 },
    KEYWORDS = { Horizontal subsurface constructed wetlands, Nitrous oxide, Methane, Artificial aeration, Macrophytes },
    OWNER = { brugerolles },
    TIMESTAMP = { 2009.02.09 },
    URL = { http://www.sciencedirect.com/science/article/B6VB5-4V75HNN-4/2/384f74f39263f4cf943ab1e8918ebb20 },
}

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