ZhuChenYuanEtAl2013

Référence

Zhu, D., Chen, H., Yuan, X., Wu, N., Gao, Y., Wu, Y., Zhang, Y., Peng, C., Zhu, Q., Yang, G., Wu, J. (2013) Nitrous oxide emissions from the surface of the Three Gorges Reservoir. Ecological Engineering, 60:150-154. (Scopus )

Résumé

Nitrous oxide (N2O) emissions from the surface of the Three Gorges Reservoir (TGR), one of the largest dams worldwide, have not been well monitored before. This study measured N2O emissions from the surface of the TGR at seven sites from February to December 2009. The measurement found no significant spatial variation of N2O emission from the reservoir, but significant seasonal variation, with the contribution of N2O emission in warm season accounting for 86% of the total, and that in June significantly higher than the other times (P<0.001). Furthermore, N2O fluxes were found to be significantly correlated with water surface temperature (T) and total nitrogen in water column (N) (F=0.002 T+0.017 N-0.035, R=0.39, PT<0.001, PN<0.01, n=42). The overall annual N2O flux rate (mean±SD) was 0.014±0.021mgN2Om-2h-1, relatively low compared with those from other reservoirs. We also found low N2O emission rate from downstream immediately after the dam (0.010±0.009mgN2Om-2h-1). Such a low N2O flux from TGR should be attributable to the low nitrogen (N) loading in the water body, which is the result of multiple approaches taken to maintain water quality and protect environment to decrease the input of N. © 2013 Elsevier B.V.

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@ARTICLE { ZhuChenYuanEtAl2013,
    AUTHOR = { Zhu, D. and Chen, H. and Yuan, X. and Wu, N. and Gao, Y. and Wu, Y. and Zhang, Y. and Peng, C. and Zhu, Q. and Yang, G. and Wu, J. },
    TITLE = { Nitrous oxide emissions from the surface of the Three Gorges Reservoir },
    JOURNAL = { Ecological Engineering },
    YEAR = { 2013 },
    VOLUME = { 60 },
    PAGES = { 150-154 },
    NOTE = { cited By (since 1996)1 },
    ABSTRACT = { Nitrous oxide (N2O) emissions from the surface of the Three Gorges Reservoir (TGR), one of the largest dams worldwide, have not been well monitored before. This study measured N2O emissions from the surface of the TGR at seven sites from February to December 2009. The measurement found no significant spatial variation of N2O emission from the reservoir, but significant seasonal variation, with the contribution of N2O emission in warm season accounting for 86% of the total, and that in June significantly higher than the other times (P<0.001). Furthermore, N2O fluxes were found to be significantly correlated with water surface temperature (T) and total nitrogen in water column (N) (F=0.002 T+0.017 N-0.035, R=0.39, PT<0.001, PN<0.01, n=42). The overall annual N2O flux rate (mean±SD) was 0.014±0.021mgN2Om-2h-1, relatively low compared with those from other reservoirs. We also found low N2O emission rate from downstream immediately after the dam (0.010±0.009mgN2Om-2h-1). Such a low N2O flux from TGR should be attributable to the low nitrogen (N) loading in the water body, which is the result of multiple approaches taken to maintain water quality and protect environment to decrease the input of N. © 2013 Elsevier B.V. },
    AUTHOR_KEYWORDS = { Climate change; Hydroelectric dams; N2O emission; Nitrogen loading },
    CODEN = { ECENE },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.ecoleng.2013.07.049 },
    ISSN = { 09258574 },
    KEYWORDS = { Emission rates; Hydroelectric dams; Nitrogen loading; Nitrous oxide emissions; Seasonal variation; Spatial variations; Three gorges reservoir; Water surface temperature, Atmospheric temperature; Climate change; Nitrogen oxides; Reservoirs (water); Surface waters; Water quality, Loading, atmospheric pollution; climate change; emission inventory; hydroelectric power plant; nitrous oxide; reservoir; seasonal variation; spatial variation; water quality, China; Three Gorges Reservoir },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84882756205&partnerID=40&md5=fc6d4ab2460a1380ca65065c7c7c537f },
}

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