达乌尔鼠兔扩散过程中的生境选择

通过调控牧压，研究了达乌尔鼠兔扩散过程中的生境选择。结果表明，放牧活动强了草原植被的斑块性，改变了植被为鼠兔提供的资源条件，导致鼠兔斑块间的扩散和扩散鼠兔对不同植被斑块的生境选择。

HABITAT SELECTION DURING DISPERSION OF DAURIAN PIKA( OCHOTONA DAURICA)

Grazing changes the resources for Daurian pika in patches in grassland, it causes dispersal of pika among different patches. Dispersers of pika show habitat selection when they colonize a new patch. They select patch with exuberant plant condition as their habitat on course grain level, for this condition contains information of good shelter and good food resources. On this basis, middle closure condition, abundance of plants which could be stored for winter, biomass of edible plants and preferred edible plants are important factors that influence success in colonization of pikas on fine grain level. Distribution of Caragana microphlla influences the microhabitat selection of pikas.