摘要
１９９２—１９９５年间，我们对苍山洱海自然保护区的小型兽类进行了生态区系的调查，共获标本３５种１６００余只，参考以往的有关资料，已知当地小兽５目１２科３０属５３种。通过８种主要生态环境的调查结果看出，小兽的物种多样性指数最高为针阔混交林，最低为农耕区，但密度最高为农耕区，最低为高山灌丛草甸。经分析认为，在苍山东西坡垂直分布调查所获３３种小兽中，有２１种（６３．６３％）属于东洋区成分；１０种（３０．３０％）属古北区成分和两种（６．０６％）为广布种。在中山温凉性针阔混交林内海拔约３１００ｍ（相当于指示种动物藏鼠兔Ｏｃｈｏｔｏｎａｔｈｉｂｅａｎａ和植物苍山冷杉Ａｂｉｅｓｄｅｌａｖａｙｉ的分布下限）是该山地两区系分异的界线。
An investigation on the fauna and ecology of small mammals on the Cangshan Mountain and Erhai Lake natural reserve was carried out from 1992 to 1995, and more than 1600 specimens belonged to 35 species were collected in the survey. Until now, 53 species which belong to 30 genera, 12 families and 5 orders, has been found in the reserve together with those recorded previously. According to the investigation in eight main ecological enviroments, the species diversity index is the highest in the coniferous and broadleaf mixed forest and lowest in the cultivated area while the highest density of small mammals is in the cultivated area and the lowest in the alpine bush or meadow. Among 33 species of small mammals in the vertical distribution investigation on both eastern and western slopes of Cangshan Mountain, 21 species (63.63%) belong to Oriental realm and 10 species (30.30%) to Palaearctic realm, and 2 species (6.06%) to wide spread species. The elevation of 3100 m (in coniferous and broadleaf mixde forest) was the dividing line between the two regions in Cangshan Mountain.
基金
国家自然科学基金
