关键词: 小型哺乳动物, 种群, 结构

Abstract: Objective To study the population structure of small mammals in Eryuan Dali.Methods Small mammals were captured by mouse-trap in different habitats form 2001 to 2003 in spring.Results A total of 661 small mammals were captured and identified,which belonged to 17 species of 8 genera,5 families,3 orders.Seventeen species of small mammals were captured outdoor,of which E.miletus and A.chevrieri were the dominant species with constituent ratio 32.71% and 23.59% respectively.Four species were captured in house,of which the dominant species were R.norvegicus and R.fiavipectus with constituent ratio 77.43% and 18.75% respectively.Conclusion The population of small mammals was abundant in outdoor habitats while that in indoor habitats was simple.