Lu Zhou, Yang Gang, Zhao Dong-Dong, Wu Ying-Huan, Meng Yuan-Jun, Zhou Fang
Nature Reserve Management Bureau of Nonggang, Longzhou County 532400, China.
Dongwuxue Yanjiu. 2013 Dec;34(6):601-9.
Surveys about the breeding bird guild structure in karst forest of Nonggang Nature Reserve, Guangxi Zhuang Autonomous Region, were conducted successively in May-July 2010, 2011 and 2012. The feeding modes, foraging strata and foraging heights of 44 breeding bird species were analyzed by clustering and principal component method. The results indicated that the avian community could be divided into 6 guilds, including ground feeding guild, lower feeding guild, upper feeding guild, multilayer feeding guild, trunk feeding guild and air strike guild. Depending on the vegetation structure of Nonggang karst forest and feeding habits, middle layer, lower layer and multilayer feeding guilds were dominant in the karst monsoon forest. Data suggests that the birds tried to alleviate competition pressures by increasing niche breadth, so multilayer feeding guild was formed.
2010年5月至7月、2011年以及2012年，相继对广西壮族自治区弄岗国家级自然保护区喀斯特森林中的繁殖鸟类群落结构开展了调查。运用聚类分析和主成分分析法，对44种繁殖鸟类的取食方式、觅食阶层以及觅食高度进行了分析。结果表明，鸟类群落可划分为6个类群，包括地面取食类群、低层取食类群、高层取食类群、多层取食类群、树干取食类群以及空中捕食类群。依据弄岗喀斯特森林的植被结构和取食习性，中层、低层和多层取食类群在喀斯特季风林中占主导地位。数据表明，鸟类试图通过增加生态位宽度来缓解竞争压力，从而形成了多层取食类群。
