毛乌素沙地残存的几种野生乔灌木的分布已寥寥无几,保护这些残存的树种已到了刻不容缓的地步。生长在固定沙丘上的柳叶鼠李、小叶鼠李是鼠李科在沙地仅有的两种古老树种,由于滥伐,近年居民点附近已经绝迹,只在人迹罕到的地方才能见到几株孤树。卫矛(月芽树)是本地区幸存的一种卫矛科小乔木,残株屈指可数,且大树下很难见到幼树生长,已临绝迹。 Much distribution of wild arbor and shrubs remaining in the Mu Us desert has been scarcely present and the protection of these remnant tree species is imminent. Growing in a fixed sand dune on the willow buckthorn, buckthorn is the rodent branch in the sand of the only two ancient species, due to deforestation, in recent years near the settlements have disappeared, only inaccessible places to see Several strains of solitary tree. Euplo (Moon Bud Tree) is a surviving species in the region, a small armaceae small tree, a small number of stubs, and the tree is difficult to see the growth of young trees, is on the verge of extinction.