大兴安岭紫貂食物组成分析

在大兴安岭地区, 从1995 年12 月至1996 年11 月在颈环遥测的4 只紫貂活动的范围内共收集紫貂粪样295个, 采用频率法和剩余物相对干重法进行分析, 得出紫貂全年食物组成及比例: 哺乳类(出现率72.09 % , 剩余物干重百分比84.06 %) , 植物浆果及种子(14.51 % , 11.09 %) , 鸟类(7.69 % , 4.24 %) 和昆虫(5.71 % , 0.96 %) 。其中红背　和棕背　构成紫貂食物的主要部分, 其次为松籽、越桔果和花尾榛鸡。紫貂食物组成季节性变化明显, 夏季食物种类丰富, 且比例较均衡; 冬季食物多样性低。文中还对两种粪样分析方法所得结果进行了比较,证明这两种方法在对主要食物种( 出现次数≥5) 的分析评述上是一致的, 无显著差异。

Analysis of Seasonal Diet Composition of Sable(Martes zibellina) in Daxinganling Mountains,Northeastern China

The seasonal diet composition of sable ( Martes zibel lina ) was anal ysed during 1995-1996 based on the analysis of 295 sable dungs collected fro m Daxinganling Mountains of China Two methods were used for comparison,i e , per centage occurrence and percentage of dry weight of remains Results indicated t h at sable consumed primarily small rodents mainly voles( Clethrionomys spp .)wit h 72 09% occurrence and 84 06% dry weightDK] Other food items inclu ded plant foo d (occurrence frequency 14 51% and 11 09% dry weight; primarily pine nuts and be rries), birds7 69% occurrence and 4 24% dry weight; mainly hazel grouse( T etr astes bonasia )]and insects(5 71% occurrence and 0 96% dry weightDK) The food it ems consumed by sable during summer are various and its diet diversity is obviou sly high during summer and low during winter The two methods were testified no apparent difference on analysis of main compositions of sable diet