Vegetation

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Vegetation

Post by wangrong on Mon Nov 22, 2010 1:11 am

Vegetation in the watershed is closely tied to elevation and precipitation levels. About 30 percent of the basin, mostly at higher elevation levels, is populated with oak, aspen and coniferous trees. At the lower levels, 27 percent of the basin is rich in mountain-brush, sagebrush, juniper and grasses. About 34 percent of the Jordan River basin is classified as urban.[82]
Russian olive and tamarisk or salt cedar trees now dominate the Jordan River floodplain where willow trees and cottonwood trees would once have been found. Plant species such as foxtail barley, saltgrass, rabbitbrush, cattails and other reeds are still found in small pockets along the river.[83] Exotic pasture grasses such as orchard grass, bluegrass, redtop bentgrass, quackgrass, wheatgrass and fescue have become the common species of grass.[84] The flower, Ute's Ladies'-tresses, is listed as a vulnerable species.[85]



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