Intrinsic and environmental properties govern the homogenization of dissolved organic matter across different inland waters during winter-spring season

This dataset contains geographical data, climatic data, anthropogenic data, physicochemical data of water samples, as well as the properties and molecular structures date of dissolved organic matter. The samples were taken from 157 aquatic ecosystems across China. The geographic distribution of the water samples spanned the coordinates 19°50' to 53°10' N, 77°22' to 134°10' E. The study area covers all climatic zones in China, including cold temperate zone, middle temperate zone, warm temperate zone, subtropical zone, tropical zone and plateau climate zone.