摘要
达茂旗17种啮齿动物分布的种间关联既呈现出复杂的网络格局,又表现出草原动物群与荒漠动物群间空间配置的分异,这与该地区处在2个动物地理亚区的过渡带特点是一致的。聚类分析则表明该旗分布着6个啮齿动物群落组。其中2个属草原生态地理动物群,其优势种为五趾跳鼠、草原黄鼠和长爪沙鼠。4个属荒漠生态地理动物群,优势种为戈壁五趾跳鼠、子午沙鼠、五趾跳鼠和三趾跳鼠。群落组的划分对于制定该旗啮齿动物防治对策具有参考价值。
This paper used numerical analysis for the interspecific association of 17 rodents and cluster of communities on 71 study sites. The results showed that the interspecific association is a complicated netted structure,but the rodents can be divided 2 group: grassland group and desert-semidesert group. There are 6 rodent community groups by 71 sites clustering. Two community groups belong to grassland group. The dominant species are Allatctaga sibirica, Citellus dauricus, Meroines unguiculatus. Four community group belong to desert-semidesert groups. The dominant species are Allactaga bullata, Meriones meridianus and Dipus sagitta.
基金
内蒙古自然科学基金
关键词
啮齿动物
种间关联
聚类分析
rodent
interspaific association
cluster analysis