CIrrMap250: Annual maps of China’s irrigated cropland from 2000 to 2020

The annual maps of China’s irrigated cropland from 2000 to 2020 were created by by integrating remotely sensed data (i.e., vegetation indices, hybrid cropland products, and paddy field maps), irrigated area statistics and surveys, and irrigation suitability. The newly developed irrigated cropland maps (named as CIrrMap250) have a spatial resolution of 250 meters and an annual temporal resolution, covering the period from 2000 to 2020. Each 250-meter grid cell within these maps is classified as either “irrigated” or “non-irrigated”. Notably, the pixel values of non-irrigated grids are set to zero, while those of irrigated grids range from greater than 0 to 1, representing the proportions of cropland area within the 250-meter grids.Data usage: All maps are provided in the geographic coordinates using the WGS84 reference system.Data format: GeoTiff. Pixel size is 0.00225 × 0.00225 degree (~250 m ×250 m at Equator).Any questions please feel free to contact: [e-mail]