OasisMap30: A 30m annual land cover dataset of China's oases from 1987 to 2024

We produced an annual 30 m land-cover dataset for Chinese oases (OasisMap30) for the period 1987–2024 using machine learning, a temporal segmentation method (LandTrendr) and principal component analysis. The dataset includes seven land-cover types: impervious surface, surface water, cropland, shrubland, forest, grassland and barren land.Data format: GeoTIFF. All files use an Albers projection with the geographic coordinate system D_WGS_1984 and a spatial resolution of 30 m.Pixel values: land-cover classes are coded as1 = impervious surface; 2 = surface water; 3 = cropland; 4 = shrubland; 5 = forest; 6 = grassland; 7 = barren.File naming convention: Oasis_Year.tif.