Laserfiche WebLink
III III I II III IIII III Doc Date:12/11/2001 <br />99s <br />S(C. Revised March 18, 1992 <br />2.04.10 Vegetation Information <br />Six vegetation communities and a small amount of cropland exist <br />within the Colowyo permit boundary. <br />The vegetation communities are sagebrush, mountain shrub, juniper, <br />aspen woodland, riparian and grassland. <br />The approximate extent of the vegetation communities throughout the <br />permit area is shown on Regional Vegetation Map (Map 3). The <br />vegetation communities on the area to be disturbed by mining are <br />mapped in more detail on the Vegetation Map (Map 4). The amount of <br />area comprising each type to be mined is found in Table 1, <br />Vegetation Community Distribution on Areas to be Mined. Areas <br />currently used as reference areas to evaluate the success of <br />revegetation are also located on the Vegetation Map (Map 4) and the <br />Regional Vegetation Map (Map 3). <br />During the summer of 1980, an intensive vegetation study was <br />completed covering the initial permit area to be disturbed by <br />mining. The area to be mined consists, primarily, of the sagebrush <br />and mountain shrub communities with small inclusions of aspen and <br />grass. <br />During the summer of 1988 vegetation study was completed for the <br />additional areas to be added to the permit. The additional areas <br />to be mined consisted, primarily, of the sagebrush,_mount_ain shrub <br />and aspen communities. <br />Vegetative mapping was accomplished utilizing information from <br />previous vegetation surveys in the area, the 1976 VTN Colorado Inc. <br />study, color aerial photography and on the ground observations. <br />Sampling locations were selected by using 300 foot by 300 foot <br />numbered grid system covering the entire area to be sampled. <br />Individual transect sites were sampled at random using the numbers <br />from the grid system for each vegetation type. At each selected <br />point, a 100 foot transect was laid out oriented in a randomly <br />selected compass direction. Five random points along each transect <br />were then selected for the quantitative vegetation sampling. <br />2.04.10-1 <br />