摘要
2009年1—3月,对黑龙江三江自然保护区狍冬季卧息地选择进行了研究,并与1999年对该保护区狍冬季卧息地选择的研究结果进行了比较,以期了解经过10a的保护,黑龙江三江自然保护区狍冬季对卧息地选择是否存在差异。与1999年在此保护区的研究结果相比,2009年冬季狍的卧息地主要为农田、隐蔽程度较低、距离水源较远、雪较浅、距离人为干扰较近、卧息地较短、窄和浅。1999年狍冬季卧息地的Fisher线性逐步判别函数F(1999)=4.063×雪深+0.644×卧息地宽+2.026×卧息地深-125.585,2009年狍冬季卧息地的Fisher线性逐步判别函数F(2009)=1.144×雪深+0.354×卧息地宽+0.294×卧息地深-14.218。逐步判别分析表明,影响冬季狍卧息地选择的因子贡献值的大小依次为雪深、卧息地宽和卧息地深,判别正确率为97.67%。
A survey was conducted to study the winter bed-site selection by roe deer（Capreolus capreolus） in the wetland of Sanjiang National Nature Reserve,Heilongjiang Province from January to March 2009.The result was compared with that of the survey conducted in 1999 aiming to find out the difference in winter habitat selection by the roe deer between the two periods after 10 years of protection.Compared with bed sites selected by the roe deer in 1999,deer mainly selected cropland and shorter,narrower and shallower sites in 2009,which were characterized by lower hiding cover,lesser snow cover,far from water areas,closer to areas of human activity.The Fisher＇s linear discriminant function of the winter habitat selection by the roe deer in 1999 and 2009 were given.The stepwise discriminant analysis indicated that some important ecological factors influencing the winter habitat selection by the roe deer were snow depth as well as width and depth of bed-sites,and the contribution value of snow depth was the highest,followed by width and depth of bed-sites.The accuracy of the discriminant function was 97.67%.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2010年第11期86-88,共3页
Journal of Northeast Forestry University
基金
国家自然科学基金(30870316)
中国博士后科学基金(20080430869)
关键词
狍
卧息地选择
逐步判别分析
典则判别函数
冬季
三江自然保护区
Roe deer（Capreolus capreolus）
Bed-sites selection
Stepwise discriminant analysis
Canonical discriminant function
Winter
Sanjiang National Nature Reserve
