Diversity characteristics of small mammals communities at different habitats in Shangrila County, Yunnan

Objective To study community structure and diversity of small mammal communities in Shangrila County. Methods A series of ecological methods were involved in this paper to calculate community structure, diversity and similari-ty. Results From June to July, 2011, a total of 425 individuals were captured, including 21 species of 14 genera, 7 families of 4 orders in four different ecological habitats in the area. The results of analysis of diversity of small mammal communities showed that the index was 0.385 7 to 1.953 7 of Shannon-Wiener diversity, 0.556 4 to 0.786 2 of Pielou evenness, 0.180 9 to 0.774 3 of Simpson dominance, and 0.050 1 to 2.393 8 of Margalef richness. Compared with the community similarity index of Whittaker, it was relatively high for the small mammal community in the forest and the farmland habitat, while it was completely different for the small mammal community in residents and alpine shrub meadow. Conclusions Species composition and diversity of small mammal community are different due to the habitat differences. Diversity of the small mammal species is the highest in the forest habitat, then in alpine shrub and meadow, it is low in farmland and residential area in Shangrila County.