The observation and collection of the mollusc, arthropod and chordate visible to naked eye in Longdong cave and Wanjiadong cave of Zunyi City have been carried out in October 2005 and February 2006. 454 samples discovered in Longdong cave are subordinated to 3 phyla,6 classes, 13 orders,20 families,29 species or groups; 1 726 samples, discovered in Wanjiadong cave, are subordinated to 3 phyla, 7 classes, 11 orders, 18 families, 22 species or groups. 6 animal communities are divided according to the kinds and numbers of animals in the light belt of two caves. According to the analysis of community diversity and the richness index of species, the diversity, maximum diversity, evenness, dominance and similarity index of community are carried respectively by community A (3,193 2),C (2.078 8), A (2.833 2),B (0,782 8),E (0.378 9) and B-E (1.785 4) .Besides,the correlation of some environmental factors to community diversity is studied. The result shows that the content of organic matter in soil has an extremely distinctive correlation to diversity index of community, with the correlation figures of 0.828, whose 2-tailed significant examines is at the ≤ 0.05 level. The content of CO2 in air has a slightly negative correlation to species, the richness index of species and the diversity, maximum diversity and evenness index of community, with the correlation figures of - 0.160, -0.263, -0.072, -0.117 and -0.031 respectively, which proves that the content of organic matter in soil and the content of CO2 in air are the important elements influencing the community variation of cave animals.
Environmental factorAnimal community structureLongdong caveWanjiadong caveGuizhou Province