Vegetation Classification and Mapping Project Report - USGS

Accuracy Assessment and Additional Map Classes
Figure 16. An example of Arizona Siltbush
Sparse Dwarf-Shrubland Vegetation
at Petrified Forest National Park.
Figure 17. An example of the base map
class Torrey’s Jointfir Shrubland – Bigelow’s
Sagebrush Sparse Vegetation at
Petrified Forest National Park.
Table 15. Accuracy statistics for the group map classes.
User 90% CI 1 Producer 90% CI
Group Map Class accuracy (range) accuracy (range)
G1 Agriculture Not sampled Not sampled
G2 Colorado Plateau Mixed Bedrock and Tableland 52.9 41.6 - 64.0 73.0 59.7 - 83.1
G3 Colorado Plateau Pinyon-Juniper Woodland 81.8 57.3 - 93.8 100.0 76.9 - 100.0
G4 Development Not sampled Not sampled
G5 Inter-Mountain Basins Active and Stabilized Dune 36.7 26.4 - 48.5 78.3 61.6 - 89.0
G6 Inter-Mountain Basins Greasewood Flat 47.1 36.0 - 58.4 85.7 71.7 - 93.4
G7 Inter-Mountain Basins Riparian Woodland and Shrubland 40.9 25.6 - 58.2 81.8 57.3 - 93.8
G8 Inter-Mountain Basins Wash 66.3 57.7 - 73.9 69.4 60.7 - 76.9
G9 Inter-Mountain Basins Semi-Desert Grassland 69.3 60.8 - 76.7 44.9 38.0 - 51.9
G10 Inter-Mountain Basins Semi-Desert Shrub-Steppe 41.8 34.7 - 49.2 38.1 31.5 - 45.1
G11 Inter-Mountain Basins Shale Badland 60.2 51.5 - 68.4 62.4 53.5 - 70.5
G12 Park Facilities Not sampled Not sampled
G13 Residential Not sampled Not sampled
G14 Southern Colorado Plateau Sand Shrubland 67.8 57.2 - 76.8 55.6 45.9 - 64.8
G15 Transportation Not sampled NS
1
CI = confidence interval
45