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• the affected area diversity. However, for purposes of establishing a reclama- tion standard, it is more reasonable to use the affected area data because these are averaged for many stands over the same large area that will ultimately be tested for revegetation success. In the Mountain Shrubland vegetation type, six species of plants contribute over 3 percent to relative cover. These are one tree (pinyon pine(, four shrubs (squaw-apple, common chokecherry, Gambel oak, mountain snowberryl, and one perennial graminoid )mutton bluegrass). It is suggested that the reclamation standard be two shrubs, two perennial grasses, and two perennial forbs. By deleting one tree and two shrubs from the standard, a more diverse mix of forage and browse will be available to all classes of livestock and wildlife. In the Pinyon-Juniper Woodland, to relative vegetation cover. These three shrubs, and one perennial gram that the reclamation standard be one and one perennial forb. Again, this support the postmining land uses. six species contribute 3 percent or more are two trees (pinyon pine, Utah juniper(, inoid )mutton bluegrass). It is suggested tree, two shrubs, two perennial grasses, is a distribution which seems to better In the Pinyon-Juniper Woodland Caprock phase, seven species of plants contribute over 3 percent to relative cover. These are two trees (pinyon pine, Utah juniper), two shrubs (true mountain mahogany, Gambel oak(, one annual grass Icheatgrassl, and two perennial forbs (Louisiana sage, hairy goldenasterl. • It is suggested that the reclamation standard be one tree, two shrubs, two perennial grasses, and two perennial forbs. 3.8 RANGE CONDITION AND CARRYING CAPACITY The Mountain Shrubland vegetation type is most comparable to the Loamy Foothills range site of the Southern Rocky Mountain Land Resource Area of the Soil Conservation Service. By comparing the potential vegetation of this range site to the 1983 cover data, it is estimated that only about 22 percent of the original vegetation composition is still present. This indicates a range site condition of poor, approaching the fair category. This range condi- tion is low because of the abundant and dense nature of the Gambel oak in this vegetation type and the resulting sparse understory. This range site is reported to produce 1,500, 1,100, and 800 Ibs/acre (in excellent condition! in faborable, median, and unfavorable years, respec- tively. Observed herbasceous production in 1983 was only 65.1 Ibs/acre. Based on these herbaceous production data, using an assumed proper use factor of 50 percent, an oven-dry Yo air-dry conversion factor of 1.1, and a monthly cattle air-dry forage requirement of 900 pounds, the estimated carrying capacity of the Mountain Shrubland is only 0.04 Animal Unit Months IAUM'sl per acre. The Pinyon-Juniper Woodland vegetation type is most comparable to the Rocky • Foothills range site of the Southern Rocky Mountain Land Resource Area. Based -18-