We used random-forest regression to separately estimate vegetation cover from 2 vegetation indices, the Normalized Difference Vegetation Index (NDVI) and the Modified l Adjusted Vegetation Index (MSAVI 2 ), derived from multispectral WorldView-2 data (1.8 m). The good model fit of R 2 5 0.79 indicates the great potential of a remote-sensing approach for the observation of grassland cover. We used the modeled relationship to produce a vegetation cover map, which showed large areas of grassland degradation.