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芜湖市及附近地区三种鹭鸟巢址特征

李永民1,2;聂传朋2;刘生杰2;吴孝兵1   

  1. 1安徽师范大学生命科学学院, 安徽芜湖 241000; 2阜阳师范学院生命科学学院, 安徽阜阳 236032
  • 收稿日期:2007-09-07 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10

Nest site characteristics of three heron species in Wuhu and adjacent regions.

LI Yong-min1,2; NIE Chuan-peng2;LIU Sheng-jie2;WU Xiao-bing1   


  1. 1College of Life Sciences, Anhui Normal University, Wuhu 241000, Anhui, China; 2School of Life Sciences, Fuyang Normal College, Fuyang 236032, Anhui, China
  • Received:2007-09-07 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10

摘要: 2005年,对芜湖市及附近地区4个营巢地的3种主要营巢鹭鸟——白鹭(Egretta garzetta)、夜鹭(Nycticorax nycticorax)和池鹭(Ardeola bacchus)的巢址特征进行了抽样调查,选取了11个巢址变量,即营巢树种、巢高、巢树高、巢上方郁闭度、巢周围1 m半径内植被郁闭度、巢树胸径、巢离树干距离、巢下最大支撑枝直径、巢离巢区边缘的距离、坡位、巢位海拔,运用单因素方差分析和主成分分析方法研究3种鹭鸟的巢址特征。结果表明,巢位因子、巢树因子、保护因子、坡位因子等4个主成分描述了3种鹭鸟的巢址特征,其贡献率分别为25.51%、24.42%、13.19%和12.32%。影响鹭鸟巢址选择的最主要因素是微栖息地适合度和巢捕食压力。

关键词: 后河自然保护区, 珍稀植物群落, 种群结构, 分布格局

Abstract: The nest site characteristics of little egret (Egretta garzetta), blackcrowned night heron (Nycticorax nycticorax) and Chinese pond heron (Ardeola bacchus) were studied by collecting samples from four heronries in Wuhu and adjacent regions in 2005. Eleven nest-site variables, i.e., nest tree species, nest height, nest tree height, coverage above nest, coverage of 1 m around nest, diameter of nest tree at breast height, distance of nest from tree center, diameter of nest branch, distance of nest to heronry edge, slope location, and altitude, were measured, and the nest site characteristics of test heron species were analyzed by the methods of one-way analysis of variances and principal component analysis. The results showed that the main components better described the nest habitats were nest site, nest tree, protection, and slope location, with the contribution rate being 25.51%, 24.42%, 13.19%, and 12.32%, respectively, and the major factors affecting the nest-site selection of test herons were microhabitat fitness and predation pressure.

Key words: Houhe Nature Reserve, Rare plant community, Population structure, Distribution pattern