百山祖自然保护区小型兽类的群落分析

Analysis of Small Mammal Community Structure in Baishanzu National Nature Reserve

2010年7月和11月应用铗日法对百山祖自然保护区小型兽类的群落结构进行调查,共捕获啮齿动物101只,隶属于2目3科10种,其中社鼠38只,刺毛鼠18只,数量居前。按生境的不同将其划分为6个小型兽类群落,采用Shannon Wiener多样性指数、Pielou均匀性指数、Simpson的优势度指数和Whittaker相似性指数分析这些群落的结构特点,结果表明,灌木林生境的小型兽类群落多样性指数最高,阔叶林生境最低;灌木林生境与针叶林生境的小型兽类群落相似性最高,其次为竹林生境与农田生境;生境中的草本层盖度以及边缘效应是影响小型兽类群落多样性和相似性的主要因子。

In July and November 2010, small mammal community structure was investigated in Baishanzu National Natural Reserve of Zhejiang. A total of 101 small mamals belonging to 10 species of 3 families of 2 orders were captured with 6888 trap-days in different vegetation belts. They could be divided into six communities based on the dominant species and the habitats. The Shannon Wiener diversity index, the evenness index and the dominance index of each community were calculated respectively. The results showed that the main impact factors on small mammal community structure were herbaceous in the habitat and edge effects. The diversity index was the largest in shrubbery. The Whittaker index of shrubbery and coniferous forest was the highest, followed by bamboo forest and farmland.