北京市门头沟灵山地区鼠种群落构成

目的研究门头沟灵山地区鼠种群落构成。方法采用夹夜法调查鼠类种群数量，采用统计学方法对群落构成进行分析。结果共计捕获鼠类12种286只，底部灌木丛中捕获鼠类5种81只，鼠类群落为社鼠＋大林姬鼠群落。中部次生林中鼠类丰富11种74只，鼠类群落为大林姬鼠＋社鼠＋花松鼠群落。顶部亚高山草甸中捕获鼠类7种131只，鼠类群落为棕背鲆＋大林姬鼠＋大仓鼠群落。结论灵山中部鼠类群落生物多样性指数最高；中部和底部鼠类群落相似性指数最高，为0．7243，顶部和底部最低，为0．4541。

Structure of rodent community in Lingshan Mountain area of Mentougou in Beijing

Objective To study the structure of rodent community in Lingshan Mountain area of Mentougou, Beijing. Methods Trap-at-night method was used to estimate the size of rodent community, and its structure was analyzed with statistical method. Results Totally, 286 rodents of 12 species were captured, 81 of five species （ Rattus niviventer and Apodemus peninsulae community） at the bottom shrubs, 74 of 11 species （ Apodemus peninsulae and Rattus niviventer and Eutamias sibiricus community） at the middle secondary forest, and 131 of seven species （ Clethrionomys rufocamus and Apodemus peninsulae and Cricetulus tricton community） at the top subalpine meadow. Conclusion Biological diversity index of rodent community at the area was highest at the middle of Lingshan Mountain, and its comparability index was highest （0. 724 3 ） at the middle and bottom and the lowest （0.454 1 ） at the top and bottom.