Dynamic data set of marsh wetland distribution in Songhua River basin with 30 m resolution in 1990

This data set includes the spatial distribution data of marsh wetlands in the Songhua River basin in 1990, providing data support for the study of wetland changes.本数据集包含1990年松花江流域沼泽湿地的空间分布数据，可为湿地变化相关研究提供数据支撑。