关键词: 啮齿类, 多样性, 生态因子

Abstract: Objective To study the relationship between ecological factors and the number of species of rodents in Shanxi province.Methods The multiple linear regression analysis.Results According to geographical features,Shanxi province was divided into six geographical regions of rodents:desert area along the Great Wall,Loess Plateau,Guanzhong plain,Qinling mountain district,Hanjiang basin and Dabashan mountain district.Four ecological factors which possibly affect the number of species of rodents in different zoogeographical regions were studied.The results showed that there were positive correlation between the number of species and temperature,precipitation,percentage of forest areas and areas of each zoogeographical region.Higher temperature and adequate precipitation were good for plant growth which was indispensable to rodents.Forests offer rodents hidden places and foods.But area casted less influence on the number of species than other factors did.The vertical distribution of rodents was also studied,which indicated that the number of species of rodents went down as heigt got higher.The natural landscape also cast influence on the species diversity,in another word,the more complicated the natural landscape was,the more species of rodents there were.Conclusion The ecological factors cast influence on the species diversity of rodents.