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《Journal of Inner Mongolia Agricultural University(Natural Science Edition)》 2009-02
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POPULATION DYNAMICS OF NORTHERN THREE-TOED JERBOA UNDER DIFFERENT DISTURBANCE IN DESERT REGION

JI Sheng-nan1,WU Xiao-dong1,YU Yi-dong2ZHANG Fu-shun1,YUAN Shuai1,ER Jin1,CAO Feng-hai3(1.Inner Mongolia Agricultural University,Hohhot 010019,China;2.Grassland station of Erdos,Dongsheng,017000,China; 3.Comprehensive station of Alashan youqi,Ekenhuduge,737300,China)  
The habitats under two kinds of different disturbed conditions,which are over grazing area and forbidden grazing area,were selected in Alashan Desert of Inner Mongolia.Using Mark-Recapture method and Jolly-seber model,we had continuously done the special research for population dynamics of northern three-toed jerboa(Dipus sagitta) about three years.The results showed that: during three years,the population quantity of northern three-toed jerboa has the significant fluctuations which experienced the trough-rise-peak-drop four times year after year,and this kind of mouse exists some regulations of population dynamics;the different disturbance has a obvious difference of the population quantities at the same year,the first time quantity peak of the three years is over grazing areaforbidden grazing area,both population annual mean quantity and the second time quantity peak are: forbidden grazing area over grazing area.
【Key Words】: Northern three-toed jerboa desert different disturbance population quantity Jolly-seber model
【Fund】: 国家自然科学基金(30560028 30760044);; 内蒙古自然科学基金(200508010511);; 内蒙古高等学校科学研究项目(ZJ03086 NJZY07047);; 内蒙古农业大学博士基金项目(BJ05-30 BJ06-33)
【CateGory Index】: Q958
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