【摘要】 小型兽类物种丰富度和多样性的海拔变化存在不同的变化趋势,鉴于这种情况,于2005年4-7月采用夹夜法对四川老君山自然保护区2个不同海拔点的小型兽类多样性进行了初步研究.结果表明:共放2 400个夹次,捕获了198个样本,捕获率为8.3%.这些样本由10个物种组成,包括4种食虫类和6种啮齿类,其中黑腹绒鼠相对数量最多,为42.4%,微尾鼩次之,为25.8%,社鼠最少,为0.5%.高海拔点比低海拔点有更大的降雨量和相对数量.虽然高低海拔点的空气温度的差异显著,但高低海拔点小型兽类物种数和多样性的差异不明显.2个海拔点小型兽类物种数和多样性没有显著的差异性可能与2点栖息地的复杂性和初级生产力相似有关.更多还原

【Abstract】 The richness and diversity of small mammal species vary along altitudinal gradients.To prove this view,I studied small mammal species in two sites at different altitudes in Laojunshan Nature Reserve of Sichuan province,western China from April to July 2005.Results indicated that 198 specimens representing non-volant small mammal species were collected in 2 400 traps,with a total trap success of about 8.3%.In total,ten species of non-volant small mammals including 4 insectivora and 6 rodents were captured in both altitudes.Eothenomys melanogaster was the most abundant species and Anourosorex squamipes was the next most abundant species during the study.Niviventer confucianus was the rarest species.Air temperature of high altitude was lower than that of low altitude,but differences from numbers to diversity of non-volant small mammals between the two altitudes remained non-significant.更多还原