318国道对格西沟自然保护区道路两侧非飞行小型兽类分布的影响

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

为研究“318国道”对格西沟国家级自然保护区生物多样性的影响,以非飞行小型兽类为研究对象,在318国道两侧每200 m海拔带间隔和离公路距离0~100 m、100~200 m和200~300 m设置了9个海拔段54个样方,调查了非飞行小型兽类种类组成,计算了多样性和均匀性指数。结果表明,在保护区“318国道”两侧,共采集到物种3目5科18种,其中0~100 m段有14种,捕获率4.49%;100~200 m段有17种,捕获率6.11%;200~300 m段有12种,捕获率4.95%。生物多样性指数在100~200 m段最高,200~300 m段最小,0~100 m段居中,表明“318国道”对格西沟自然保护区小型兽类的影响不大。

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.