Fig 5. Proportions of dominant cover types.

Proportions of the three dominant cover types (cropland, Conservation Reserve Program [CRP] grassland, and prairie) in the Sand Sagebrush Prairie Ecoregion of southwestern Kansas, southeastern Colorado, and northwestern Oklahoma, USA, from 1985–2015. The Conservation Reserve Program was initiated in 1986, and excluded from analysis as an established cover type before 1990.