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<br /> <br />• The Ponderosa Pine and Douglas-E'ir vegetation type tends to <br />occur on soils of P•4apping Unit XhR~-F (Dear-ktock outcrop complex, 12 tru <br />G5 percent slopes) which have primarily northern exposure. <br />The soils (lazear and minor inclusions) are sk~allow, well <br />drained, and medium textured. The soils' surface layers are brown stony <br />].oams to light yellowish brown looms to a depth of approximately 9 <br />inches. The underlying material is very pale brown loam that overlies <br />sandstone bednxk between 15 and 'l0 inches. These soils occur on <br />moderate steep to steep upland mesas. <br />The area, occupied by the pine-fir vegetation type is <br />classified by the Soil Conservation Service as a Rocky Foothills range <br />site which has been discussed in relation to the tdountain Skuvb and <br />Juniper-Pinyon vegetation types. The two dominant tree spies are not <br />• mentioned in the range site description because both species are present <br />outside their normal range. <br />INTF{ODUCID PAS"1'URI; <br />The valley bottom along Hay Gulch is comi~osed of introduced <br />pasture grasses. As the valleys narrow, Rabbit Brvsh (Chrysothamnus <br />nauseous) becomes common and as the valley is narrow even more, <br />occasional Narrow Leaf Cottonwood (Populus angustifolia) and Aspen <br />(Populus trgnuloides) can be found. These valley bottans are used <br />primarily for cattle pasture with some of the larger areas being cut for <br />flay . <br />- 8 - <br />• <br />