Dataset on environmental characteristics of the sampling sites in Jiulong River Estuary, Sansha Bay, Yangtze River Estuary, and Bohai Sea

This data set inludes the environmental characteristics of bottom water and surface sediments from Jiulong River Estuary, Sansha Bay, Yangtze River Estuary, and Bohai Sea, such as the bottom water temperature, salinity, nitrate and ammonium concentrations, and sediment organic carbon/nitrogen contents, carbon to nitrogen ratio, and porosity.