Study On Classification And Species Diversity Of Soil Ciliates In Boyu Nature Reserve Of Gansu

The classification and species diversity of soil ciliates in Boyu Nature Reserve of Gansu were studied by observing in vivo and protargol impregnation from July of 2007 to December of 2008. 76 species of soil ciliates were identified, including 2 new record species of soil ciliates in China, 9 unnamed species , 6 soil endemic species and 21 species with strong degree of soil autochthonism, belonging to 1 phylum, 3 classes, 6 subclasses, 10 orders, 29 families and 42 genera.Distribution of soil ciliates in various sampling sites were studied. 38 species in Songpindaguai site was most abundant, then 37 species were distributed in Zhongluhewushenggoushangzhaizi site, 36 species were distributed in Fengyuanzi-1 and Boyualugouyinglinduan sites respectively; 31, 29, 26, 25, 22 and 24 species were respectively distributed in Boyualugoubotieliang, Qumashimengoukou-1, Qumashimengoukou-2, Qumazhugou-2, Fengyuanzi-2 and Boyuzhuerlanggou; 19 species in Qumazhugou-1 site was fewest. The results showed that there was closer relationship between distribution of species numbers and environmental conditions in various sites.According to species with frequency in the various sites, There were 9 widely distributed species with frequency from 0.80 to 1.00, 29 common species with frequency from 0.35 to 0.75 and 38 rare species with frequency from 0.05 to 0.30.The result of species diversity similarity between Boyu Nature Reserve of Gansu and other areas in China showed that there were big differences between Boyu Nature Reserve and these areas.The results of analysis on community composition of soil ciliates in Boyu Nature Reserve of Gansu showed that the most important groups were Hypotrichida, Prostomatida and Colpodida. Three dominant groups accounting for 69.74% of the total species. Cyrtophorida and Oligotrichida were incidental groups.