关键词: 沙狐, 洞穴选择, 主成分分析

Abstract: This study investigated the selection of dens of the corsac fox during May 2001 in the prairie of eastern Inner Mongolia. We observed 64 dens found and used principal component analysis to analyze the results. Seven factors affecting the selections of dens of corsac fox in decreasing order of importance were as follows : slope position (varying with slope degree and slope height) , water source , vegetation , microclimate , food , human disturbance , and microhabitat. However , the influence of food abundance , slope direction , and direction as well as inclination of the den entrance on the den selection of corsac fox was insignificant.

Key words: Corsac fox (Vulpes corsac), Den selection, Principal component analysis