Effects of National Highway 318 on the Biodiversity of Non-volant Small Mammals on Both Sides of the Road in Gexigou Nature Reserve

In order to study the effects of National Highway 318 on the biodiversity in Gexigou National Nature Reserve, the non-volant small mammals was selected as the research object. 54 sampling plots of 9 altitude zones were set up at altitude interval of 200 m and distances of 0-100 m, 100-200 m and 200-300 m from the highway on both sides of National Highway 318. The species composition of non-volant small mammals was investigated, and the diversity and evenness indexes were calculated. The results showed that there were 18 species, 5 families and 3 orders on both sides of the 318 National Highway in the nature reserve, of which 14 species were found in 0-100 m section, and the capture rate was 4.49%. 17 species of small mammals were found in 100-200 m section, and the capture rate was 6.11%. There were 12 species in 200-300 m section, and the capture rate was 4.95%. The biodiversity index was the highest in 100-200 m section, the lowest in 200-300 m section and the middle in 0-100 m section, which indicated that National Highway 318 had little effect on non-volant small mammals in Gexigou Nature Reserve.