中国大沙鼠生态学研究进展

20世纪90年代以来我国对大沙鼠的生态学研究工作进展较快.这些研究成果,明确了中国大沙鼠分为4个亚种以及它们的地理分布;提出了食物、地形和植被覆盖度是决定大沙鼠对栖息地选择的重要因素;鼠洞、洞群和种群的空间分布格局均表现为聚集分布;证实了大沙鼠繁殖三次,其种群的性比存在显著差异,年龄由幼体、亚成体、成体1组、成体2组和老体组成;描述了大沙鼠的生活习性;同时研究表明,大沙鼠与子午沙鼠二者存在着激烈的竞争.

Advance of Ecological Study on Great Gerbil(Rhombomys opimus) in China

Since the nineties of the 20th century,the ecological study on Great Gerbil (Rhombomys opimu) in china has made a great advance,those achievements can be summarized as follows:the Rhombomys opimus population was composed of 4 subspecies and their geographical distribution regions were explicated.Food,landform and vegetation coverage were the important factors for Rhombomys opimus to select their habitat. The spatial patterns of individual holes, holes complex, and population obviously displayed a gathered-distribution. It was confirmed that the Rhombomys opimus bred three times annually and the difference of sex rate of the population was marked. The age structure of the population was composed of the young-bodies, sub-bodies, bodies-I, bodies-II and aged-bodies.The behavior habits of the Rhombomys opimus were described.In the same time, the relationship between the Rhombomys opimus and Meriones meridianus was studied,and the result showed that a keen competition existed between them.