Table 1. Areas of vegetative cover types in the Wyoming Basin, physiographic area 86. Forest coverages are taken from USFS FIA data, nonforest cover types are modified from USGS data. Habitat coverages with superscript * are combined from both databases by adding USGS coverage in the "nonforest" section of the USFS database.
Cover types

Area (ha)

Area (ac)

Percent of Total
Ponderosa pine forest *

379,600

937,992

2.61
Fir-spruce forest *

451,700

1,116,151

3.10
Lodgepole pine forest *

940,900

2,324,964

6.47
Chaparral forest

23,400

57,821

0.16
Pinyon pine-juniper forest *

269,600

666,182

1.85
Mixed hardwood forest *

78,500

194,494

0.54
Aspen-birch forest *

11,700

28,911

0.08
Irrigated agriculture, corn, soybeans, wheat

213,900

528,547

1.47
Bluestem grassland

660,600

1,632,343

4.54
Grama grassland

940,500

2,323,976

6.46
Wheatgrass grassland

2,997,200

7,406,081

20.60
Sagebrush prairie

7,116,200

17,584,130

48.90
Barren ground, sparse vegetation

383,400

947,381

2.63
Alpine tundra

23,600

58,316

0.16
Water *

62,100

153,449

0.43
 Totals

14,552,900

35,960,216

100