1988-2015当曲流域典型区1:10万湿地变化图

基于Landsat系列卫星影像，采用决策树分类方法，解译了2015年当曲流域湿地数据，并结合专家知识、人工目视解译和2012年、2013年、2014年和2015年9月~10月野外土地覆被类型调查样点，对初步提取结果进行全面的修正。选择当曲流域变化典型的区域，选取当曲流域苔草-嵩草沼泽、嵩草沼泽化草甸、小嵩草草甸、河流、河流洪泛湿地、湖泊、湖沼和冰湖 8个湿地类型之间的相互转换以及湿地转换为非湿地的情况。编制了典型区三期湿地变化的分布图。

Based on Landsat series satellite imagery, wetland data of the Dangqu River Basin in 2015 were interpreted using the decision tree classification method. Comprehensive corrections were then conducted on the initially extracted results by integrating expert knowledge, manual visual interpretation, and field land cover type survey samples collected from September to October of 2012, 2013, 2014 and 2015. Typical regions with distinct wetland changes in the Dangqu River Basin were selected, focusing on the mutual transitions among eight wetland types including Carex-Kobresia marsh, Kobresia swamp-meadow, Kobresia pygmaea meadow, rivers, river floodplain wetlands, lakes, lake marshes and glacial lakes, as well as the conversions from wetlands to non-wetlands. Finally, wetland change distribution maps for three periods in these typical regions were compiled.