Spatiotemporal changes of biogenic elements in the Changjiang River Estuary and adjacent waters in summer over the last decade

Lu Yang Yujia Zhang Xiaoli Wang Qiulu Wang Long He Xiao Li

Lu Yang, Yujia Zhang, Xiaoli Wang, Qiulu Wang, Long He, Xiao Li. Spatiotemporal changes of biogenic elements in the Changjiang River Estuary and adjacent waters in summer over the last decade[J]. Acta Oceanologica Sinica, 2023, 42(1): 83-90. doi: 10.1007/s13131-022-2104-3
Citation: Lu Yang, Yujia Zhang, Xiaoli Wang, Qiulu Wang, Long He, Xiao Li. Spatiotemporal changes of biogenic elements in the Changjiang River Estuary and adjacent waters in summer over the last decade[J]. Acta Oceanologica Sinica, 2023, 42(1): 83-90. doi: 10.1007/s13131-022-2104-3

doi: 10.1007/s13131-022-2104-3

Spatiotemporal changes of biogenic elements in the Changjiang River Estuary and adjacent waters in summer over the last decade

Funds: The National Research Program of China under contract No. 2017YFC1405300.
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  • Figure  1.  Location of the Changjiang River Estuary and adjacent waters.

    Figure  2.  Temporal changes of surface biogenic elements in the Changjiang River Estuary and adjacent waters during the summer of 2008−2016.

    Figure  3.  Spatiotemporal changes of surface biogenic elements in the Changjiang River Estuary and adjacent waters by grids during the summer of 2008−2016. a. DIN concentration change; b. ${{\rm {PO}}_4^{3-}} $ concentration change; c. ${{\rm {SiO}}_3^{2-}} $ concentration change; d. N/P molar concentration ratio change; e. Si/N molar concentration ratio change.

    Figure  4.  Spatial distribution of surface biogenic elements in the Changjiang River Estuary and adjacent waters during the summer of 2008−2016. a. DIN concentration; b. ${{\rm {PO}}_4^{3-}} $ concentration; c. ${{\rm {SiO}}_3^{2-}} $ concentration; d. N/P molar concentration ratio; e. Si/N molar concentration ratio.

    Figure  5.  Spatial distribution of surface chlorophyll a (Chl-a) in the Changjiang River Estuary and adjacent waters during the summer of 2008−2016.

    Figure  6.  Changes of surface biogenic elements along the longitude of the Changjiang River Estuary and adjacent waters during the summer of 2008−2016.

    Figure  7.  Red tide events in the Changjiang River Estuary and adjacent waters from 2008 to 2016.

    Table  1.   Correlation between biogenic elements and chlorophyll a

    FactorsGrey correlation degreeRank
    DIN concentration0.7444
    ${{\rm {PO}}_4^{3-}} $ concentration0.5665
    ${{\rm {SiO}}_3^{2-}} $ concentration0.8543
    N/P molar concentration ratio0.9241
    Si/N molar concentration ratio0.9222
    下载: 导出CSV

    Table  2.   Biogenic elements limitation in the Changjiang River Estuary and adjacent areas

    YearN limitationP limitationSi limitation
    20080.3%98.0%0.6%
    20090.8%93.8%2.0%
    2010086.3%0
    2011099.2%0
    2012096.9%0
    20130.3%97.8%0.3%
    2014099.7%0
    20150.3%91.9%0.3%
    2016099.2%0
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-02-09
  • 录用日期:  2022-09-13
  • 网络出版日期:  2023-01-18
  • 刊出日期:  2023-01-25

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