弄岗穗鹛与短尾鹪鹛冬季取食空间生态位比较  

Spatial Niches of Nonggang Babbler and Streaked Wren Babbler in Winter

作　　者：陆舟[1] 杨岗[1] 舒晓莲[1] 余桂东[1] 周放[1] 

机构地区：[1]广西大学动物科学技术学院,广西南宁530005

出　　处：《广西师范大学学报（自然科学版）》2015年第4期120-126,共7页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(31172123)

摘　　要：2011年12月至2012年2月和2012年12月至2013年2月,在弄岗自然保护区对弄岗穗鹛和短尾鹪鹛的取食地生态因子进行调查,通过8个生态因子的生态位宽度、生态位重叠及种间竞争进行分析,结果表明:2个不同属而同域分布的鹛类在坡位因子、乔木盖度因子、草本盖度因子、小生境类型因子和取食高度因子等5个因子上的生态位宽度较小,而在灌木盖度因子、落叶盖度因子和裸岩比例因子等3个因子上的生态位宽度较大;二者之间的生态位重叠值和竞争系数非常高;2种鹛类在取食地中的竞争压力非常大;弄岗穗鹛和短尾鹪鹛对于阔叶林生境、较大的乔木盖度和地面取食等生态因子的选择具有很强的倾向性。The eco-factors of the foraging sites of Longgang babbler and Streaked Wren babbler were surveyed in Nonggang National Natural Reserve from Dec.2011 to Feb.2012 and Dec.2012 to Feb.2013.The analyses of the niche width,niche overlap and interspecific competition of eight eco-factors showed that the niche width of the two babblers which had different genera and sympatric distribution in5factors（slope,arbor coverage,herbage coverage,microhabitats,foraging height）was lower,but higher in 3factors（shrub coverage,litter coverage,bare rock ratio）.The niche overlap and competition coefficient were very high between the two species.The pressure of interspecific competition in their foraging sites was intense.Longgang babbler and Streaked Wren babbler had strong tendency to choose the eco-factors such as broad-leaved forest habitat,larger arbor coverage and ground feeding.

关 键 词：弄岗穗鹛 生态位宽度 生态位重叠 种间竞争 

分 类 号：Q958.1[生物学—动物学] Q959.7