HeGuanXueEtAl2019

Référence

He, Y., Guan, W., Xue, D., Liu, L., Peng, C., Liao, B., Hu, J., Zhu, Q., Yang, Y., Wang, X., Zhou, G., Wu, Z., Chen, H. (2019) Comparison of methane emissions among invasive and native mangrove species in Dongzhaigang, Hainan Island. Science of the Total Environment, 697. (URL )

Résumé

The strength of methane (CH4) source of mangroves is not well understood, especially when including all CH4 pathways in consideration. This study measured CH4 fluxes by five pathways (sediments, pneumatophores, water surface, leaves, and stems) from four typical mangrove forests, including Kandelia candel without pneumatophores and three species with pneumatophores: Sonneratia apetala, Laguncularia racemosa and Bruguiera gymnorhiza-Bruguiera sexangula. The CH4 fluxes from sediments were 4.82 ± 1.46 mg CH4 m−2 h−1 for K. candel and 1.36 ± 0.17 mg CH4 m−2 h−1 for the other three with pneumatophores. Among the three communities with pneumatophores, S. apetala community had significantly greater emission rate than the other two (P < 0.05). Pneumatophores in S. apetala were found to significantly decrease CH4 emission from sediments (P < 0.01), while those in B. gymnorhiza-B. sexangula were significantly increase it (P < 0.05). CH4 fluxes from waters were 3.48 ± 1.11 mg CH4 m−2 h−1, with the highest emission rate in the K. candel community for the duck farming. Leaves of mangroves except for those of K. candel were a weak CH4 daytime sink, but stems were a weak source. The total 72 ha of mangroves in the Changning river basin emitted about 8.10 Gg CH4 per year, with a weighted emission rate of about 1.29 mg CH4 m−2 h−1. Our results suggested that mangroves are only a small methane source to atmosphere with great contribution from sediments and waters, only slight contribution from leaves and stems. Pneumatophores of different mangrove species played different roles in CH4 fluxes from sediments. © 2018

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@ARTICLE { HeGuanXueEtAl2019,
    AUTHOR = { He, Y. and Guan, W. and Xue, D. and Liu, L. and Peng, C. and Liao, B. and Hu, J. and Zhu, Q. and Yang, Y. and Wang, X. and Zhou, G. and Wu, Z. and Chen, H. },
    TITLE = { Comparison of methane emissions among invasive and native mangrove species in Dongzhaigang, Hainan Island },
    JOURNAL = { Science of the Total Environment },
    YEAR = { 2019 },
    VOLUME = { 697 },
    NOTE = { cited By 0 },
    ABSTRACT = { The strength of methane (CH4) source of mangroves is not well understood, especially when including all CH4 pathways in consideration. This study measured CH4 fluxes by five pathways (sediments, pneumatophores, water surface, leaves, and stems) from four typical mangrove forests, including Kandelia candel without pneumatophores and three species with pneumatophores: Sonneratia apetala, Laguncularia racemosa and Bruguiera gymnorhiza-Bruguiera sexangula. The CH4 fluxes from sediments were 4.82 ± 1.46 mg CH4 m−2 h−1 for K. candel and 1.36 ± 0.17 mg CH4 m−2 h−1 for the other three with pneumatophores. Among the three communities with pneumatophores, S. apetala community had significantly greater emission rate than the other two (P < 0.05). Pneumatophores in S. apetala were found to significantly decrease CH4 emission from sediments (P < 0.01), while those in B. gymnorhiza-B. sexangula were significantly increase it (P < 0.05). CH4 fluxes from waters were 3.48 ± 1.11 mg CH4 m−2 h−1, with the highest emission rate in the K. candel community for the duck farming. Leaves of mangroves except for those of K. candel were a weak CH4 daytime sink, but stems were a weak source. The total 72 ha of mangroves in the Changning river basin emitted about 8.10 Gg CH4 per year, with a weighted emission rate of about 1.29 mg CH4 m−2 h−1. Our results suggested that mangroves are only a small methane source to atmosphere with great contribution from sediments and waters, only slight contribution from leaves and stems. Pneumatophores of different mangrove species played different roles in CH4 fluxes from sediments. © 2018 },
    AFFILIATION = { CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China; Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, 510520, China; State Key Laboratory of Soil Erosion and Dryland Farming, College of Forestry, Northwest A&F University, Yangling, 712100, China; Institute of Environment Science, Department of Biology Science, University of Quebec at Montreal (UQAM), 201 President-Kennedy, Montréal, H2X 3Y7, Canada },
    ART_NUMBER = { 133945 },
    AUTHOR_KEYWORDS = { Biogeochemistry; Greenhouse gases; Mangrove forests; Methane budget; Tropical ecosystems },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.scitotenv.2019.133945 },
    SOURCE = { Scopus },
    URL = { https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85071401359&doi=10.1016%2fj.scitotenv.2019.133945&partnerID=40&md5=57a7dbcd860baaac3415dd526f6912a6 },
}

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