四川唐家河自然保护区小型兽类夏季相对密度的研究

2003年7～8月对唐家河自然保护区的小型兽类相对密度进行调查，共捕获小型兽类18种，相对密度较大的为高山姬鼠(Apodemus cheurieri)，占38．95％，其次为社鼠(Niviventer confucianus)和龙姬鼠(Apodemus draco),均占12．21％。在调查生境样点中，菜家坝(12．00％)、大火地沟(9．63％)、腰磨岩(7．26％)和白熊坪(6．29％)4处小型兽类相对密度较大，而文县河(3．68％)和大草坪(3.00％)二处则较小，各样点的优势种群也不相同，导致其显著差异可能与其食物充足程度有一定关系。

Relative Density of Small Mammals in Tangjiahe Nature Reserve in Summer

During July to August,2003,an investigation on relative densities of rodent community in Tangjiahe Nature Reserve has been carried out.A total of 18 small mammal species were recorded in the study site.The species with higher relative densities included Apodemus chevrieri(38.95%),Apodemus draco(12.21%)and Niviventer confucianus(12.21%).In the seven typical sites,the relative densities were higher in Chaijiaba(12.00%),Dahuodigou(9.63%),Yaomoyan(7.26%)and Baixiongping(6.29%).But it was much lower in Wenxianhe(3.68%)and Dacaoping(3.00%).Besides,the dominant species were different in every typical sites.However,the reason leading to such distinct result might relate to the abundance level of food.