Distribution of Wetlands in Inner Mongolia Plateau, China

The dataset includes spatial distribution of wetlands in 1993, 2002 and 2013 of Inner Mongolia Plateau, which is derived from Landsat ETM+, TM and OLI images. Calculation of normalized difference water index (NDWI) combined with manual interpretation are adopted to extract wetland information with Albers equal-area projection. Based on field investigation, the relationships between each wetland type and the corresponding imagery features in terms of color, shape, location and texture are established, combining with the ancillary data included Google Earth images, topographic map (1:100,000) and digital elevation model (DEM, 1:100,000), the complete wetland information (with patch area>0.01km2) was finally extracted by visual interpretation.