大、小兴安岭松鼠的食性

The Food Habit of Red Squirrels in Daxing'an Mt. and Xiaoxing'an Mt.

对大、小兴安岭林区野生松鼠的胃内容物进行分析的结果表明 ,种子和浆果类是松鼠的主要食物组成成分 ,约占整个食物组成的 78% ;其次是真菌类食物 ,占整个食物组成的 10 % ;树芽、叶及树皮类占的比例较小 ,一般在 5 %～ 8% ;夏季 ,松鼠也取食一些昆虫及其它小型动物。松鼠食性还存在明显的季节性和区域性差异。

The food habit of red squirrels ( Sciurus vulgaris ) was studied by analyzing the contents of the stomachs in the forest regions of Daxing'an Mountains and Xiaoxing'an Mountains from 1999 to 2000. The results show that seeds and fruits were the most important food of red squirrels accounting for 78% of total foods. The next main food was fungi which contained 10% of total food. The little ratio of buds, leaves, barks and vascular material were found in the food of red squirrels, which made up from 5% to 8% of the stomach contents. Red squirrels also were found to be occasional predators of insects and other small animals in summer. There were significant difference in food habit among different seasons and so do between the two areas.