Species Diversity of Small Mammals on the North and South Slopes of Gongga Mountain National Nature Reserve in Sichuan Province

From March to October 2022, a special survey of small mammals was carried out in Gongga Mountain National Nature Reserve, and 48 quadrates of 5 sample lines were laid out, with a total of 9,226 forges, 1,687 forges of traps and 60 forges of squirrel cages. A total of 1299 specimens were collected and identified, including 3 orders, 6 families, 16 genera and 27 species. Compared with previous studies, 11 species of small mammals were newly collected. The results showed that: (1) The species richness of small mammals on the south slope of Gongga Mountain Nature Reserve was higher, and the species uniformity of small mammals in the north slope was higher; (2) There were obvious differences in the dominant species of small mammals on the north and south slopes; (3) The vertical distribution areas of different species were different, and vertical distribution area of the same species was also different on the south and north slopes; (4) The difference of small mammal species diversity on the south and north slopes was mainly reflected in Rodentia and Lagomorpha.