Ecoregions are based on perceived patterns of a combination of causal and
integrative factors including land use, land surface form, potential natural
vegetation, and soils (Omernik, 1987). This is ...
This dataset supports NRCS resource conservation activities
nationwide. This includes wetlands determinations, soil erosion,
water quality, grazing lands, chemical run-off and many other
The California Department of Forestry and Fire Protection's Fire and Resource
Assessment Program (FRAP) assesses the amount and extent of California's
forests and rangelands, analyzes their conditions ...