贵州省云台山林下鸟类群落特征

为了研究贵州省云台山喀斯特山地森林林下鸟类群落的组成、结构和季节动态,在2011年9月～2012年8月用网捕法对该区域的林下鸟类进行了调查,共捕获鸟类25种231只,隶属于3目12科.全年平均网捕率为6.85只·100网-1·h-1,灰眶雀鹛(Alcippe morrisonia)在4个季节的捕获率均最高;体重集中在7～42g之间的鸟类占总种类及总数量的96.00%和99.57%;鸣禽23种,占总捕获种类的92.00%;食虫鸟的种类、个体数和生物量比其他食性鸟类相应的特征值高.春季鸟类群落的种类、个体数、生物量、网捕率和Shannon-Wiener指数的值比其他季节的相应值高.Sorenson相似性系数最高为夏季-秋季鸟类群落,最低为春季-夏季鸟类群落.针叶林覆盖面积大是决定云台山林下鸟类群落特征的主要因素之一.

Characteristics of Understory Avian Communities at Mt.Yuntaishan of Guizhou Province

A bird survey was carried out from Sept.2011to Aug.2012with mist-net method,in order to explore the composition,structure,and seasonal dynamics of understory birds in the karst mountainous forest of Mt.Yuntaishan,Guizhou Province.A total of 25species,which belonged to 12families and 3orders,was captured.The mean capture rate was 6.85individuals per 100net-hours for the whole year,and Alcippe morrisonia was the top capture in each season.The birds with body weight from 7to 42g accounted for 96.00%and 99.57%of the total species and total number,respectively.Twenty-three species of songbirds were captured,which accounted for 92.00% of the total species.The species,number and biomass of insectivore were higher than those of other feeding guild birds.The species,number,biomass,capture rate and Shannon-Wiener index in spring were higher than those in the other three seasons.The highest Sorenson similarity index was the summer-autumn avian community,and the lowest was the spring-summer avian community.The high ratio coverage of coniferous forest was one of the main reasons that decided the characteristics of understory avian community of Mt.Yuntaishan.