【摘要】 2017年2月，采用样线法、样方法对大兴安岭北坡根河市越冬期花尾榛鸡种群密度开展野外调查，借助因子测量法、因子分析法等技术手段，对其夜栖地环境因子进行测量分析．研究结果表明:1)在大兴安岭北坡区域中，花尾榛鸡越冬期间的种群密度介于1.59～4.47只·km^-2之间．2)在夜栖地选择方面，表现出对针阔混交林的显著偏好，选择比例高达100%;且倾向于在开阔度较大的生境斑块边缘卧息过夜，这一行为偏好占比达80%. 3)花尾榛鸡卧迹长为（25.67±4.73） cm、宽为（17.17±2.77） cm、深为（29.70±9.69） cm、高为（16.47±3.72） cm;粪便长为（21.61±1.96） mm、直径为（6.27±0.57） mm.4)在越冬微生境选择方面，受多种因子的综合影响;其中第1主成分涵盖乔木距离、干扰区距离、巢址雪深、乔木密度及灌丛密度等要素;第2主成分主要涉及海拔与灌丛距离;第3主成分则聚焦于林缘距离．更多还原

【Abstract】 In February 2017,the population density of the Hazel Grouse during the wintering period in Genhe City,the northern slope of the Greater Khingan Range,is investigated in the field using the transect method and quadrat method. The environmental factors of its nocturnal roosting sites are measured and analyzed with the aid of factor measurement methods and factor analysis techniques. The results show that in the northern slope area of the Greater Khingan Range,the population density of the Hazel Grouse during the overwintering period is 1. 59 ～ 4. 47 individuals·km^-2. In terms of nocturnal roosting site selection,a significant preference for mixed coniferous and broadleaved forests is exhibited,with a selection proportion as high as 100%,and a preference for resting overnight at the edges of open habitat patches is observed,accounting for 80% of the behavior. The dimensions of the Hazel Grouse resting traces are as follows. Length is（ 25. 67 ± 4. 73） cm,width is（ 17. 17 ± 2. 77） cm,depth is（ 29. 70 ±9. 69） cm and height is（ 16. 47 ± 3. 72） cm. The dimensions of the feces are that length is（ 21. 61 ± 1. 96） mm and diameter is（ 6. 27 ± 0. 57） mm. The selection of overwintering microhabitats is influenced by a combination of multiple factors,with the first principal component covering elements such as distance to trees,distance to disturbance areas,snow depth around nest,tree density and shrub density. The second principal component mainly involves elevation and shrub distance,and the third principal component focuses on the distance to forest edge.更多还原