摘要: 通过对内蒙古东部草原 64个沙狐洞穴的观测 ,采用主成分分析法 ,对沙狐洞穴选择作了初步的定量研究。分析结果表明 :影响沙狐春季洞穴选择的主要生态因子有 7种 ,依次为 :坡位因子 (随坡度、坡高的变化而变化 ) ,水源因子 ,植被因子 ,微气候因子 ,食物因子 ,人为干扰因子和微生境因子。而坡向、洞口朝向及洞道口倾角等影响不明显

摘要: At present it is lack of the ecological data about corsac forx(Vulpes corsac)in China.Nine non-breeding corsac fox’dens were dug and measured in Hulunbeier grassland in Inner Mongolia, of which six have one tunnel and one entrance for their own and another three have two tunnels and two entrances for each. The mean width of den entrance is 27.3 cm and the mean height of entrance is 22.7 cm. The mean length of the dens is 207.3 cm and the mean distance is 54.7 cm from the ground to the deepest point of the dens. Although corsac fox used to expand rodent’s dens as its own dens, which is the main source of the dens, sometimes it digs dens by itself too. Corsac fox’ dens are very narrow and long corresponding with its stature. In the measured twelve dens’ tunnels, there are nine with a bend. Corsac fox’dens are generally distributed in open grasslands, riverine gentle incline or steep hills.