The Relationship Between Clone Bush And Surface Environment In Western Erdos Desert

The clone bushes were investigated and counted in Western Erdos desert area. Clone configuration and pattern were analyzed and researched by selecting surface environment as resources dimension and using niche width, overlap and similar ratio formula. The results were as follows:There were 14 clone bush breeds in Western Erdos desert area, and making up to 17.95% of the total clone bushes. In which, 13 breeds had clump clone configuration, 4 breeds had guerilla clone configuration, and 3 breeds had both of them. The clump clone configuration was common in the area.The niche width of clone bush in Western Erdos desert area was measured by using Shannon-Wiener index and Simpson index, and the compositor of the niche width was consistent basically in the same index. The niche width, niche overlap and similar ratio were comparatively large. Whether the breeds had large niche width or small, their niche overlap and similar ratio were comparatively large possibly. The main reason of which was that the way of utilizing resources was similar.Leptodermis ordosica had the largest niche width in altitude resource axis, and had the minimum in resource axis of surface soil structure, which explained that it was very sensitive to the change of soil structure. Spongiocarpella grubbovii had the minimum niche width in both altitude resource axis and integrative resource axis, which indicated that it had strong selectivity to environment.