中文摘要：

弄岗国家级自然保护区森林是典型的喀斯特森林。2010年2月—2013年2月对其中的鸟类群落进行了研究。利用样线法、样点法和数理统计等方法对弄岗森林鸟类群落结构、多样性等进行了调查和数据分析。结果如下：（1）共记录到鸟类222种,隶属13目42科。其中留鸟148种,夏候鸟31种,冬候鸟39种,旅鸟4种。弄岗喀斯特森林鸟类群落的特点为留鸟所占比例远大于候鸟,雀形目构成鸟类群落的主要组成成分。弄岗喀斯特森林鸟类区系组成在华中、华南、西南这三区广泛分布的种类最多,鸟类的区系组成具有一定的华南、华中、西南三区区系特征,但总体上以华南区区系特征为主。（2）对弄岗喀斯特森林林缘、弃耕地、森林内部3种生境进行多样性研究。3种生境的夏季和冬季鸟类多样性指数、均匀性指数和优势度指数均较高。鸟类群落结构组成在夏冬两季的波动并不明显,总体上较为稳定。

英文摘要：

The Nonggang National Nature Reserve forest was a typical karst forest. In this study,bird community was surveyed from February 2010 to February 2013. Community composition and avian diversity in the forest were studied by line transect method and point count method. The results showed that：（ 1） there was a total of 222 species,which belonged to13 orders and 42 families,including 148 residents,31 summer visitors,39 winter visitors and 4 passage migrants. The proportion of the residents was more than that of visitors. Passeriformes was the main component of the bird community in Nonggang karst forest. The species of the birds widely distibuted in south,central and southwest China was the most abundant in Nonggang karst forest. Therefore,the composition of avian fauna had the characteristics of south,central and southwest China,but the most significant was south China in general.（ 2） The analysis of bird diversity in the three types of habitats（ forest edge,abandoned field,forest interior） in Nonggang karst forest suggested that,the diversity index,evenness index and dominance index in summer and winter were higher than the other seasons. No obvious fluctuation of bird community structure was observed in summer and winter.