大兴安岭林区雪兔冬季生境选择研究

The Research of Lepus Timibus Habitat Selection In Daxing'anling Forest Area in Winter

在冬季,雪兔在非生物环境因子的选择中,偏好山体的坡下位和谷底,坡向为阳坡,坡度较小及小于10 cm雪深的生境;在生物环境因子的选择中,偏好针阔混交林和灌丛、乔木株数较少、灌木低于2 m、灌丛隐蔽度为30%-60%、杂草高度小于50 cm和含有倒木的生境;冬季雪兔对生境选择是基于保存自身能量、获取食物和躲避天敌基础上的。

The results of Lepus timibus selection in winter showed that：in those environmental factors,the preferred position is under the mountain slope and valley,a sunny aspect,slope and habitat preferences of smaller than 10 cm snow depth habitats;Lepus timibus in the selection of biological environmental factors,preferences Charles broad mixed and shrubs,trees number of trees less preferred habitat preferences bush and shrub cover less than 2 meters is 30-60% of the habitat preferences than weed height 50 cm habitats and habitats with fallen trees.These results can be obtained from Lepus timibus habitat selection in winter is based on its energy saving,food acquisition and avoiding predators.