次生阔叶林花鼠的种群生态

Population Ecology of Eutamias sibiricus in Secondary Broad-leaved Forest

分别于1989—1994年和2006—2007年4—10月份,在吉林省左家自然保护区对花鼠的种群密度、性比、年龄结构等进行了调查。结果表明:种群密度为29.78只/hm2;种群的性比(♀∶♂)为0.885∶1,差异不显著;利用体质量、体长和臼齿磨损程度等确定了年龄结构,结果基本一致;洞道的结构分简单洞和复杂洞两种形式。

Population density, age structure and sex ratio of Eutamias sibiricus were studied in Zuojia Nature Reserve, Jilin Province during April and September from 1989 to 1994 and 2006 to 2007. Result showed that the population density was 29. 78 individuals/hm^2, with a population sex ratio （♀：♂） of 0.885： 1, indicating an insignificant difference in sex ratio. Age compositions divided by body weight, body length and molar are similar. The hole structure of E. sibiricus has two types, namely simple hole and complicated hole.