ChenWangWuEtAl2011

Référence

Chen, H., Wang, M., Wu, N., Wang, Y., Zhu, D., Gao, Y. and Peng, C. (2011) Nitrous oxide fluxes from the littoral zone of a lake on the Qinghai-Tibetan Plateau. Environmental Monitoring and Assessment, 182(1-4):545-553. (Scopus )

Résumé

Nitrous oxide (N 2O) fluxes were measured in six littoral mirco-zones of Lake Huahu on Qinghai-Tibetan Plateau in the peak growing season of years of 2006 and 2007. The weighted mean N 2O flux rate was 0.08 mg N m -2 h -1 (ranged from -0.07 to 0.35 mg N m -2 h -1). The result was relatively high in the scope of N 2O fluxes from boreal and temperate lakes. Emergent plant zones (Hippuris vulgaris and Glyceria maxima stands) recorded the highest N 2O flux rate (0.11 ± 0.24 and 0.08 ± 0.17 mg N m -2 h -1, respectively). Non-vegetated lakeshore recorded the lowest N 2O flux (0.03 ± 0.11 mg N m -2 h -1), lower than that from the floating mat zone of Carex muliensis (0.05 ± 0.18 mg N m -2 h -1), the floating-leaved plant zone of Polygonum amphibium (0.07 ± 0.11 mg N m -2 h -1), and the wet meadow (0.07 ± 0.15 mg N m -2 h -1). Standing water depths were important factors to explain such spatial variations in N 2O fluxes. Significant temporal variations in N 2O fluxes were also found. Such temporal variation in N 2O flux in the littoral zone may be dependent on the interaction of water regime and thermal conditions, instead of the latter solely. These results showed the importance of the littoral zone of lake, especially the emergent plant zone, as a hotspot of N 2O fluxes in such grazing meadows. © 2011 Springer Science+Business Media B.V.

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@ARTICLE { ChenWangWuEtAl2011,
    AUTHOR = { Chen, H. and Wang, M. and Wu, N. and Wang, Y. and Zhu, D. and Gao, Y. and Peng, C. },
    TITLE = { Nitrous oxide fluxes from the littoral zone of a lake on the Qinghai-Tibetan Plateau },
    JOURNAL = { Environmental Monitoring and Assessment },
    YEAR = { 2011 },
    VOLUME = { 182 },
    PAGES = { 545-553 },
    NUMBER = { 1-4 },
    ABSTRACT = { Nitrous oxide (N 2O) fluxes were measured in six littoral mirco-zones of Lake Huahu on Qinghai-Tibetan Plateau in the peak growing season of years of 2006 and 2007. The weighted mean N 2O flux rate was 0.08 mg N m -2 h -1 (ranged from -0.07 to 0.35 mg N m -2 h -1). The result was relatively high in the scope of N 2O fluxes from boreal and temperate lakes. Emergent plant zones (Hippuris vulgaris and Glyceria maxima stands) recorded the highest N 2O flux rate (0.11 ± 0.24 and 0.08 ± 0.17 mg N m -2 h -1, respectively). Non-vegetated lakeshore recorded the lowest N 2O flux (0.03 ± 0.11 mg N m -2 h -1), lower than that from the floating mat zone of Carex muliensis (0.05 ± 0.18 mg N m -2 h -1), the floating-leaved plant zone of Polygonum amphibium (0.07 ± 0.11 mg N m -2 h -1), and the wet meadow (0.07 ± 0.15 mg N m -2 h -1). Standing water depths were important factors to explain such spatial variations in N 2O fluxes. Significant temporal variations in N 2O fluxes were also found. Such temporal variation in N 2O flux in the littoral zone may be dependent on the interaction of water regime and thermal conditions, instead of the latter solely. These results showed the importance of the littoral zone of lake, especially the emergent plant zone, as a hotspot of N 2O fluxes in such grazing meadows. © 2011 Springer Science+Business Media B.V. },
    COMMENT = { Cited By (since 1996): 1 Export Date: 16 May 2012 Source: Scopus CODEN: EMASD doi: 10.1007/s10661-011-1896-y },
    ISSN = { 01676369 (ISSN) },
    KEYWORDS = { Greenhouse gases fluxes, Lake, Littoral wetlands, N 2O budget, Nitrogen cycling, Zoige plateau, Flux rates, Growing season, Hot spot, Littoral wetlands, Littoral zone, Nitrogen cycling, Nitrous oxide, Qinghai-Tibetan plateau, Spatial variations, Standing water depth, Temporal variation, Thermal condition, Vulgaris, Water regime, Weighted mean, Zoige plateau, Anesthetics, Global warming, Greenhouse gases, Nitrogen oxides, Lakes, nitrous oxide, grazing, greenhouse gas, intertidal environment, lake, nitrogen cycle, nitrous oxide, spatial variation, temporal variation, water depth, aquatic species, article, biomass, Carex muliensis, China, controlled study, Glyceria maxima, greenhouse gas, Hippuris vulgaris, intertidal zone, Kobresia tibetica, lake ecosystem, nitrogen cycling, nitrous oxide emission, plant height, polygonum extract, steppe, Air Pollutants, Air Pollution, China, Environmental Monitoring, Greenhouse Effect, Lakes, Nitrous Oxide, Wetlands, China, Qinghai-Xizang Plateau, Carex, Glyceria maxima, Hippuris vulgaris, Polygonum amphibium },
    OWNER = { Luc },
    TIMESTAMP = { 2012.05.16 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-80054750328&partnerID=40&md5=cab0b6eff89f7274f816cfd78863aa9d },
}

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