The Research Of Brandt's Vole Dispersal

My research is the dispersal of Brandt's Vole.From Aug,2003 to Oct,2004 Author adopt the method of tripping (namujila's trip) to capture vole and the method of Capture-Recapture to research the dispersal of Brandt's Vole at Ehebaolige and Wuliyasitai in Inner Mongolia Dongwuqi. The result of the research as fellows:(1) The dispersal characteristic of Brandt's Vole1 )In spring Brandt's Vole disperse from relative low vegetation to relative high vegetation. 2) In initial breed stage adult male first disperse from hole 3)In summer Brandt's Vole obviate high vegetation enviroment.4) Seeper infect Brandt's vole transfer in rain day 5)Each breed stage male vole dispersal proportion greater than female vole's.(2) The Dispersal pattern of Brandt's Vole:1) In the early days of bread mature male Brandt's Vole first dispersal from hole.2) Immature Brandt's Vole dispersal manner : â‘  Part immature voles in two hole together found new holeâ‘¡ Admitted by else hole â‘¢Immature vole transfer to temporary hole .the temporary hole around original hole 3) Monsoon advent , holes are destroyed . Mature vole in these different holes steady collect nearby dry hole . 4)Part mature voles disperse from the center larger hole to ambient small temporary hole.5) Part mature voles in hole disperse to abandoned hole found a new steady society.6) In the depositing grass time vole don't regroup , the reason is that the abundance of available grass .When available grass is lack to live through winter ,there are voles in else holes disperse to relative rich grass hole .Then low status mature male vole out.