BaiYangChenEtAl2014

Référence

Bai, Z., Yang, G., Chen, H., Zhu, Q., Chen, D., Li, Y., Wang, X., Wu, Z., Zhou, G. and Peng, C. (2014) Nitrous oxide fluxes from three forest types of the tropical mountain rainforests on Hainan Island, China. Atmospheric Environment, 92:469-477. (Scopus )

Résumé

Tropical rainforest soil is an important source of atmospheric nitrous oxide (N2O). However, there is still considerable uncertainty about the spatial and temporal variability of N2O fluxes. To understand these fluxes, we quantified the annual N2O emissions from three tropical mountain rainforests (primary mountain rainforest, PMR; secondary mountain rainforest, SMR; and Podocarpus imbricatus plantation, PIP) in the Jianfengling National Natural Reserve on Hainan Island, China. The average of N2O emissions in this area was 2.52±0.33kgN-N2Oha-1yr-1 (3.52kgN-N2Oha-1yr-1 in the wet season and 1.62kgN-N2Oha-1yr-1 inthe dry season) during our study period, with highly seasonal variations. The mean N2O emission rates were significantly higher during the wet season (68% of the total average) than the dry season (32% of the total average) (P<0.05). PIP had the highest N2O emission rate at 3.49±0.61kgN-N2Oha-1yr-1 (4.74kg N-N2Oha-1yr-1 in the wet season and 2.32kgN-N2Oha-1yr-1 in the dry season), followed by SMR at 3.03±0.64kgN-N2Oha-1yr-1 (4.16kgN-N2Oha-1yr-1 in the wet season and 1.97kgN-N2Oha-1yr-1 in the dry season), and then PMR at 1.53±0.49kgN-N2Oha-1yr-1 (2.21kgN-N2Oha-1yr-1 in the wet season and 0.94kgN-N2Oha-1yr-1 in the dry season). We observed a significant Gaussian relationship between the N2O fluxes and soil temperature for SMR and PIP but no significant relationship in PMR. There was a significant exponential relationship between the N2O fluxes and water filled pore space (WFPS) in SMR and PIP but not in PMR. © 2014.

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@ARTICLE { BaiYangChenEtAl2014,
    AUTHOR = { Bai, Z. and Yang, G. and Chen, H. and Zhu, Q. and Chen, D. and Li, Y. and Wang, X. and Wu, Z. and Zhou, G. and Peng, C. },
    TITLE = { Nitrous oxide fluxes from three forest types of the tropical mountain rainforests on Hainan Island, China },
    JOURNAL = { Atmospheric Environment },
    YEAR = { 2014 },
    VOLUME = { 92 },
    PAGES = { 469-477 },
    NOTE = { cited By (since 1996)0 },
    ABSTRACT = { Tropical rainforest soil is an important source of atmospheric nitrous oxide (N2O). However, there is still considerable uncertainty about the spatial and temporal variability of N2O fluxes. To understand these fluxes, we quantified the annual N2O emissions from three tropical mountain rainforests (primary mountain rainforest, PMR; secondary mountain rainforest, SMR; and Podocarpus imbricatus plantation, PIP) in the Jianfengling National Natural Reserve on Hainan Island, China. The average of N2O emissions in this area was 2.52±0.33kgN-N2Oha-1yr-1 (3.52kgN-N2Oha-1yr-1 in the wet season and 1.62kgN-N2Oha-1yr-1 inthe dry season) during our study period, with highly seasonal variations. The mean N2O emission rates were significantly higher during the wet season (68% of the total average) than the dry season (32% of the total average) (P<0.05). PIP had the highest N2O emission rate at 3.49±0.61kgN-N2Oha-1yr-1 (4.74kg N-N2Oha-1yr-1 in the wet season and 2.32kgN-N2Oha-1yr-1 in the dry season), followed by SMR at 3.03±0.64kgN-N2Oha-1yr-1 (4.16kgN-N2Oha-1yr-1 in the wet season and 1.97kgN-N2Oha-1yr-1 in the dry season), and then PMR at 1.53±0.49kgN-N2Oha-1yr-1 (2.21kgN-N2Oha-1yr-1 in the wet season and 0.94kgN-N2Oha-1yr-1 in the dry season). We observed a significant Gaussian relationship between the N2O fluxes and soil temperature for SMR and PIP but no significant relationship in PMR. There was a significant exponential relationship between the N2O fluxes and water filled pore space (WFPS) in SMR and PIP but not in PMR. © 2014. },
    AUTHOR_KEYWORDS = { Soil temperature; Spatial and temporal variability; Tropical mountain rainforest; Water filled pore space },
    CODEN = { AENVE },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.atmosenv.2014.04.059 },
    ISSN = { 13522310 },
    KEYWORDS = { Atmospheric chemistry; Drought; Forestry; Nitrogen oxides; Particulate emissions; Temperature; Tropics, Atmospheric nitrous oxide; Natural reserves; Seasonal variation; Soil temperature; Spatial and temporal variability; Tropical mountain rainforest; Tropical rain forest; Water-filled pore space, Landforms, nitrogen; nitrous oxide, air temperature; article; China; forest; humidity; pH; Podocarpus imbricatus plantation; primary mountain rainforest; priority journal; seasonal variation; secondary mountain rainforest; soil acidity; soil temperature; soil water content; tropical rain forest; water content, Drought; Emission; Forests; Nitrogen Oxides; Soil; Temperature; Tropical Atmospheres },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84899919448&partnerID=40&md5=cafb659d2cf59191d77c53d562014a17 },
}

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