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调查区属中温型荒漠草原区,多为未星植的原始草牧场,鼠害严重,而且几种主要害鼠是鼠疫等自然疫源性疾病的贮存宿主。通过1973～1981年的调查,共发现鼠类24种。其中长爪沙鼠是代表种和优势种;达乌尔黄鼠分布较广但数量较少;赤颊黄鼠、子午沙鼠、大沙鼠和黄兔尾鼠等呈局限性分布。集中分布于河谷低地的几种鼠组成的鼠类群落,数量大而稳定,互相接触密切,有多种共同寄生的媒介昆虫,使病原微生物在各种鼠之间传播。在保存和延续鼠疫自然疫源性方面,充分发挥着各自的作用,它们共同栖息的生境已成为鼠疫动物病长期保存的地段,或称之为基础疫源地。
The investigation area belongs to the temperate desert steppe area, mostly the original grassland of non-asterias, with severe rodent infestation and several major pest rats are the storage hosts for natural foci of plague and other diseases. Through the survey from 1973 to 1981, a total of 24 species of rodents were found. Meriones unguiculatus was the representative species and dominant species; Daurian ground squirrel was widely distributed but less in number; the red cheek rats, Meriones unguiculatus, Great gerbil and Yellow rabbit had limited distribution. A large number of stable and closely related murine colonies of several mice concentrated in the low valley of the valley, with a variety of common parasitic vector insects, make the pathogenic microorganisms spread among various mice. They play their respective roles in preserving and extending the natural foci of plague. Their common habitat has become a long-term preserved area for plague animals or as a basic foci.