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Sampling sites: setting information and environmental factors. (A) Locations of the sampling sites (red circles) in the coastal cities of the Yellow Sea, China. (B) Field conditions of the sampling sites. (C) The environmental factors of the sampling sites. The distribution data of the green tides were obtained from the interpretation and analysis of remote sensing satellite HY-1D (CZI) data. The imaging time was 2023-07-20, with a resolution of 50 m.
