Reclamation-oriented spatiotemporal evolution of coastal wetland along Bohai Rim, China

Fan Wei Mei Han Guangxuan Han Min Wang Lixin Tian Jiqian Zhu Xianglun Kong

Fan Wei, Mei Han, Guangxuan Han, Min Wang, Lixin Tian, Jiqian Zhu, Xianglun Kong. Reclamation-oriented spatiotemporal evolution of coastal wetland along Bohai Rim, China[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-022-1987-3
Citation: Fan Wei, Mei Han, Guangxuan Han, Min Wang, Lixin Tian, Jiqian Zhu, Xianglun Kong. Reclamation-oriented spatiotemporal evolution of coastal wetland along Bohai Rim, China[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-022-1987-3

doi: 10.1007/s13131-022-1987-3

Reclamation-oriented spatiotemporal evolution of coastal wetland along Bohai Rim, China

Funds: The National Social Science Foundation of China under contract No. 21BGL026.
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  • Figure  1.  Dynamics of the Bohai Rim coastal zone from 1980 to 2019 (red boxes show the hotspots of reclamation changes for the Laizhou Bay, the Yellow River Delta, the Bohai Bay, the Liaodong Bay, and the Pulandian Bay, respectively).

    Figure  2.  Spatial and temporal evolution atlas of land-use types in the Bohai Rim from 1980 to 2019 (the Overall Accuracy from 1980 to 2019 was 83%, 87%, 85%, 87%, 89%, 92%, 90%, 89%, and 93%).

    Figure  3.  Map of coastal wetlands structure transformation in the Bohai Rim from 1980 to 2019.

    Figure  4.  Changes in landscape indices in the Bohai Rim from 1980 to 2019.

    Figure  5.  Dynamic changes in the tidal flat reclamation in the Bohai Rim (the RMSE values from 1980 to 2019 was 28.2, 25.2, 23.5, 23.1, 22.5, 21.0, 19.4, 19.1, and 17.9).

    Figure  6.  Changes in the proportion of reclamation and the tidal flat in the Bohai Rim.

    Figure  7.  Significant change regions of reclamation in the Bohai Rim.

    Figure  8.  Correlation between reclamation and the tidal flat in the Bohai Rim.

    Table  1.   Data sources of the coastal wetlands in the Bohai Rim

    GPS controlling points (274)Field surveys (2016)
    Landsat-2/MSS, Landsat-4 /MSS, Landsat-5 /TM, Landsat-8 /OLI, and Gaofen-1/WFVThe Geospatial Data Cloud (
    The website of the US Geological Survey (
    The remote sensing market website (
    A 1:200 000 topographic map of the Bohai RimThe National Basic Geographic Information Center (
    National night light data (1995–2019)The Geological Survey Cloud platform (
    A 1980 land-use map of the Bohai RimThe Geological Survey Cloud platform (
    Google Earth satellite imagesThe Google Earth(
    Historical tidal levelThe China Maritime Service website (
    A digital bathymetric chartThe Ship Information Network (
    Shoreline dataset extracted from Google Earth remote sensing images The Global Change Research Data Publishing & Repository (
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    Table  2.   Classification system of the coastal wetlands in the Bohai Rim

    Primary classificationSecondary classificationDefinition
    Natural wetlandstidal flatA mudflat or sandy beach with very low vegetation coverage in the intertidal zone
    marshA muddy area with thick vegetation and long-standing water
    riverA type of wetland formed by a river and its surrounding vegetation, intertidal estuary
    lakeFreshwater lakes
    offshore area, LagoonCoastal buffer zone, brackish mixed area of the estuary; at the edge of the sea, salinity is constantly changing under the influence of tides
    Man-made wetlandsaquaculture pondFish, shrimp, and other aquaculture pond, and artificial cultivation of reed fields
    paddy fieldFarmland, such as rice fields
    salt panSalt field and salt field storage tanks
    Non-wetlandconstruction landMaintenance of the land needed for urban functions, residential land, industrial parks, and ports
    drylandDry land
    forest and grasslandNatural woodland, artificial woodland, and grassland
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