【摘要】 1995年10月、1996年4～5月、9～10月和1999年10月在达茂旗腾格淖尔地区对大沙鼠的生态进行了调查，主要观察了大沙鼠的洞口及利用、食性、取食及食物的贮存、警戒及了望、换毛、扩散及迁移等行为.在达茂旗的布拉格（东经109°56′，北纬42°20′）发现有大沙鼠的分布，推测大沙鼠的迁移距离可能达70*!km以上.更多还原

【Abstract】 A preliminary observation was made on holes and their utilization,feeding habits,alimentation and guarding,changing hairs,diffusion and migration et al of Rhombomys opimus in ecological investigation in Tengnaor region,Damaolianheqi banner during October,1995,April-May,1996 and September-October,1999.A distribution of Rh.Opimus in Burag (42°20′N，109°56′E) of Damaolianheqi area was found here,on which we suggest that migrating distance of Rh. Opimus can reach to more than 70*#km.更多还原