Abstract: In fivekinds of different enviroment from Hulin county of Heilongjiang province, western suburb of Harbin andXianghai natural conservation of Jilin province, the author has observed and analysed 83 fox den and 120 den openings. The results showed that two kinds dens in five different environment were found, one is the main den and another is the temporary den, they werenodifferences in district. The main den has two openings and the temporaryden has one opening. The overall means were 26.48(±1.03)cm in the opening width, 26.35(±1.24)cm in the opening height. The first tunnel length of the red fox den is 117.86(±8.38)cm. The dens opening faced the sunlight accounting for 46.67%, and fox dens located at the top of the slop accounting for 60.24%．

Key words: Red fox(Vulpex vulpes), Den, environment

摘要： 作者在黑龙江省虎林县，哈尔滨市西郊和吉林省向海自然保护区的5种不同环境，对赤狐(Vulpes vulpes)的83个洞穴120个洞口进行观察分析。结果表明，在各种环境中的主洞穴和临时洞穴之间不存在地区差别，主洞穴洞口一般2个，临时洞穴洞口一般为1个。洞口平均宽度为26.8±1.03厘米，高26.35±1.24厘米；第1通道长117.86±8.38厘米，洞口朝阳(占46.87% )或半朝阳(占24.17% )，狐穴大多坑于坡顶(60.24% )。

关键词: 赤狐, 洞穴, 环境