紫貂冬季生境选择的初步研究

采用无线电跟踪技术和全球定位系统对大兴安岭阿巴河流域紫貂冬季的生境选择进行了研究。结果表明，紫貂偏好成熟林地和老龄林地。（１）紫貂冬季栖息地主要的优势树种是落叶松林。对中等盖度的林地选择性强，而不选择开阔地带和特别高盖度地区。（２）主要栖息中，下坡位，而对上坡位选择性不强；（３）对小树密度，大树密度，乔木胸径，倒木长度，倒木密度，倒木直径等有正选择性。

Preliminary Research on the Habitat Selection of Sables in Winter

The habitat selection of sables (Martes zibellina) in winter was studied by radio-tracking and GPS(Global Positing System) in Daxing' anling Mountains, China. The results showed that the sablespreferred forest attributes associated with late succession. In winter- the sables selected the dominanttrees Larix gmelini (55. 3%) and selected forest with intermediate cover degrees of tree canopy (71. 6%).They preferred the middle of slope and slope bottoms (83. 6%). and did not prefer ridgetops. Sablespreferred large tree 's density, small tree 's density, large tree 's diameter at breast height, log's lengthand log's density etc. They did not select larch's diameter at breast height. shrub canopy and slopaspect etc. The sables generally selected sites with high food abundance. According to the results- theforest with attributes associated with late succession stages and the trees with large diameter at breastheight (>40 cm) should be preserved properly during selection cutting.