云南白草岭鼠形小兽群落结构及垂直分布

The Community Structure and Vertical Distribution of Small Mammal in Baicaoling Mt., Yunnan Province,China

对云南白草岭鼠形小兽群落结构、垂直分布及动物区系进行了调查。结果共捕获小兽 2 1种 1 0 2 8只 ,隶属于啮齿目 (Rodenria)鼠科 (Muridae) 1 0种 ,仓鼠科 (Cricetidae) 2种 ,松鼠科 (Sciuridae) 2种 ;食虫目(Insectivora)科 (Soricdae) 6种 ,鼹科 (Talpidae) 1种。其中东洋界 1 5种 ,占 71 4 3% ,古北界 4种 ,占1 9 0 4 % ,广布种 2种 ,占 9 5 3%。各个垂直带鼠形小兽群落物种多样性指数分别为 ,Ⅰ 云南松林及山坡耕作地带 ( 2 0 0 0～ 2 6 5 0m) 1 381 4 ;Ⅱ 温凉性针阔叶混交林带 ( 2 6 5 0～ 31 5 0m) 1 6 1 2 6 ;Ⅲ 苍山冷杉林带( 31 5 0～ 35 0 0m) 1 34 88;Ⅳ 亚高山灌丛草甸带 ( 35 0 0～ 36 5 7m) 1 5 0 85。云南白草岭优势种主要由齐氏姬鼠 (Apodemuschevieri)、中华姬鼠 (A .draco)、大耳姬鼠 (A .latronum)、大绒鼠 (Eothenomysmiletus)和昭通绒鼠 (E .olitor) 5种组成。

The community structure, vertical distribution and fauna had been studied in Baicaoling Mt., Yunnan province. It had been captured that the 21 species of 1*!028 small mammals belonging to the 10 species of Rodenria, the 2 species of Cricetidae, the 2 species of Siuridae, the 6 species of Soricdae and the 1 species of Talpidae, which of the 15 species (71.43%) belong to Oriental realm, the 4 species (19.04%) belong to Palaearctic realm, and the 2 species (9.53%) belong to wide spread species. The species diversity indexes of the vertical zones are as followings:1.Yunnan pine forest and cultivated area (2*!000～2*!650*!m):1.381*!4;2.Cool-temperate coniferous and broadleaf forest (2*!650～3*!150*!m):1.612*!6;3.Fir forest(3*!150～3*!500*!m):1.348*!8;4.Subalpine bush and grass lands(3*!500～3*!657*!m):1.508*!5. The dominant species are Apodemus chevier, A.draco, A.latronum, Eothenomys miletus and E. olitor in Baicaoling Mt.