次生阔叶林猛禽的群落结构及其季节变化

The Community Structure and Season Change of Bird of Prey In Second Deciduous Broad-Levled

猛禽是鸟类中的一个重要类群，在森林鸟类群落中起着重要的作用，构成了自身的群落特点。在吉林省东部左家自然保护区山地次生阔叶林的研究中发现，无论是冬季，还是夏季，猛禽的群落均具有其稳定性；同一季节各年份间，无论从种类、种数、个体数量等均没有显著差异，而同一年的不同季节间有显著差异。从整体看，夏季猛禽群落的多样性指数（Ｈ＇）高于冬季，但差异不大；均匀性指数（Ｊ＇）和种间相遇几率（ＰＩＥ），在年份和季节上均无显著差异；消费生物量（ＳＣＢ）在季节间存在着显著差异。

he community of bird of prey is very important part of the bird community;its action is also very important in second deciduous brend-leveled. From 1988 to 1992,we studied the consist and structure of the community in bird of prey in second deciduous broad-leveled of ZuoJia;we found that the consist and structure of community difference not only in years,but also in seasons. In winter and summer the difference is very notable (|t| >t(0.05)). The community of bird of prey in winter is stable in years, but it change in summers and it has the tendency of increuse year by year.