PERMFILE42935

• Permit No: C1981023
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Vegetation Survey of the Pinyon-Juniper Type
• Section_Exhibit Name: EXHIBIT 5 VEGETATION PART 2 /missing map
• Media Type: D
• Archive: No

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3.4 PRODUCTIVITY DATA
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Mean herbaceous production on the pinyon-juniper affected area was
32.77 lbe/acre (Table 3.4). Perennial grasses including Bouteloua raei-
lie; Oryzopsis hymenoides, and Agropyron spp. were the main contributors to
the grass production, which was appro~dmately 75 percent of [he overall
production on the affected area. Production on the reference area (28.71
lbs/acre) vas only slightly less than on the affected area (Table 3.4).
Approximately :1 percent of the production on the reference area was
comprised of grasses, primarily perennial grasses including Oryzopsis hyme-
noides, and Bouteloua eurtipendula.
3.5 DENSITY OF WOODY SPECIES
Hears density of shrubs and sub-shrubs on the pinyon-juniper affected
area vas approximately 2501 per acre (Table 3.5). uercus gambelii,
Purshia tridentata, and Eriogonum spp. were the most frequently encountered
shrub/sub-shrub species.
• Mean density of trees on the pinyon-juniper affected area is approxi-
mately 88 per acre (Table 3.6). Pinus edulis vas the dominant tree species
followed in descending order by Juniperus osteosperma and Pinus ponderosa.

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