Shrubland is the dominant biome west of the Rocky Mountains. Four major types of shrubland exist in North America including desert shrubland, California Chaparral, sagebrush steppe and shrubland, and salt desert shrubland. Soils and plant species in these systems are diverse and extremely heterogeneous. For example, one government research property in the sagebrush steppe and shrubland of Oregon (the Eastern Oregon Agricultural Research Center) contains 54 soil map units in 6,475 ha (16,000 acres).
North America - Shrubland