|
APPENDIX III—I-2
<br /> U . S . Forest Service
<br /> Thompson Creek Study Area
<br /> Ecological Land Unit Description
<br /> A. Land Cauabi'itr
<br /> The identification of land capability •s cased :n an analysis of land and rece'_at've inventory data.
<br /> This inventory identif'ed 'en ecosystems LU's!, F-gare :; . 2escr,otions are as follows:
<br /> Ecological Land Unit 0
<br /> Vegetation: E.n,celmann Souuce and subaloine fir with a sparse .rd erstory of grasses and shrubs.
<br /> Revegetation potential is moderate and production :otential is high.
<br /> Geomorphology: -fis unit is on -fountain sideslcoes. 'here sloces are generally in the 15-40 percent
<br /> range. Erosion hazard and sass movement ootentials are -oderate. Soils are forming from basalts,
<br /> sandstones, siltstores and shales. The Unit is the Source of high quality 'water witn potential
<br /> existing to increase Hater yields tnrouch vegetative :ran-aulaticrs. This unit only has ist and
<br /> End order streams because of 'ts high position on Lne 'arescape.
<br /> Wildlife: The most oo,.,ous species using this EL'J include elk, black bear, rcrc::o'ne, and nine
<br /> squirrel. Less covious are coyotes, sn,c'.,shce hares, pine marten, chipmunks, ;eshawks and a variety
<br /> of small birds such as grey jay, whitecro.,ned sparrows, blacrcapced cn---kadees and pine grosbeaks.
<br /> Ecological Land Unit =2
<br /> Vegetation: This unit consists of sera! aspen c:-riinities. =roduct,on potential is nigh and the
<br /> revegetation potential is ^oderate.
<br /> Geomorphology: T"4s unit is on -ountain sidesiG:es. These sloces are generally =n
<br /> percent range. c r_s cn Hazards are moderate and sass move^-nt :oter,t-al is moderate to high.
<br /> Soils are forming ^rpm basalts, sar,dstores, siltstones and snaies. This unit is the source of high
<br /> duality Hater with potential to increase yields through vegetative -anipuiations. This unit con-
<br /> tains lst and End order streams.
<br /> Wildlife: This is one of the most oroduct've E_J's from a wildlife standpoint on the Planning
<br /> Jn,t. Cbundant forage exists for deer and elk. Less obv,.ous species include coyotes, black bear,
<br /> goshawk and numerous kinds of small rodents. A. wide variety of oirds exists including tree
<br /> swallows, Williamson's sapsuckers, robins, ;ray-,-,ended juncos, and blue grouse.
<br /> Ecolog4cal Lard ;;nit =3
<br /> Vegetation: This unit 'has -ountain meadows, shrubs and rock eutcreos. Production potential varies
<br /> on this unit, but it is generally high. Revegetation potential is moderate.
<br /> Geomorohology: This unit is on mountain sidesle:es. Slopes are generally in the 1E-40 percent
<br /> range with some areas ceing steeper. Erosion nazards and sass movement potentials are moderate.
<br /> Soils are forming from basalt, sandstone, and shales. This unit is the source of high quality water
<br /> with little potential nor increased yields through vegetative manipulation. Forst, second and
<br /> third order streams occur in this unit.
<br /> Wildlife: The most obvious species _sine this EL'J are eik, deer, red-tailed hawk and golden eagle.
<br /> Less obvious are '.ie snowsnce 'hare, black bear, various species of rodents and a variety of small
<br /> birds such as mountain bluebird, robin arc kestrel .
<br /> Ecological Land Unit =�
<br /> Vegetation: The primary overstory species is aspen. This unit has a ^oderate production cctential . _
<br /> Revecetation ranges from -oderate to very tow. "here are two smiting factors; the steep slopes
<br /> and the fine textured soils.
<br /> Geomorpholocy: This ELU Cggurs on steep sloces, 'usually 3E percent or steecer. The soil has a
<br /> high erosion ''hazard. Some of the soils are form•rg on :arcos Shale and have a h'ch mass movement
<br /> pGLential . The streams run from. high ele�,at-on, steep gr_d ent streams, to depositional streams
<br /> with steep mountain sidesiopes at the lower elevations. ne potential to increase water yield
<br /> through vegetation manipulation is low.
<br /> 4i1dli°e: This is one of tie -rost productive E1-"s from a ',v 'giife stardpoint on the Planning
<br /> Unit. =.tun Want :race eX'sts for deer and elk. Less obv`cus .:ec•es include coyotes, black tear.
<br /> ccsha';Ik and "ercus-kinds of small rodents. ti wice 'varie`_y of birds _xistS rcluding trpe
<br /> Swallows, Williamson's sapsuckers, robins, gray-headed jurcos, arc blue grouse.
<br /> —42—
<br />
|