【摘要】 采用β多样性指数中的二元属性数据测度法对甘肃陇西黄土高原两栖爬行动物区系的β多样性进行了研究.结果显示:陇西黄土高原41种两栖爬行动中,属东洋界16种,占该地区两栖爬行动的39.02%,古北界15种,占36.58%,广布种10种,占24.39%,古北界和东洋界成分相当,明显反映了该地区区系成分的过渡性质;从陇西黄土高原向陇南山地、陇东高原的生境变迁中,属间、种间更替相对比较缓慢;陇西黄土高原和陇东高原属间、种间分化和隔离较小;陇西黄土高原和陇南山地两栖爬行动物的区系的相似程度最高,物种组成最为接近.更多还原

【Abstract】 Theβ-diversity of amphibians and reptiles on loess plateau of west Gansu was studied by the binary attribute data measurment of β-diversity index in this paper.The result showed that there were 41 species of amphibians and reptiles on loess plateau of west Gansu,in which 16 species(39.02%) belonged to the oriental kingdom,15 species(36.58%) belonged to the north kingdom and 10 species(24.39%) widespread,the components of both the oriental kingdom and the north kingdom to be equivalent and reflected clearly the transitivity of fauna elemnt in the region.The intergeneric rotation and interspecies rotation were slower in the habitat transition from loess plateau of west Gansu to highland of south Gansu and palteau of east Gansu.The differentiation and isolation between intergeneric and interspecies of loess plateau of west Gansu and palteau of east Gansu were less.The fauna element of amphibians and reptiles on loess plateau of west Gansu and highland of south Gansu had the highest similarity degree and the nearest species composition.更多还原