广西西南石灰岩地区的鸟类多样性

Bird Diversity in Limestone Area of Southwestern Guangxi,China

广西西南石灰岩地区位于中国南部,是全球生物多样性热点地区之一。2002-2014年,对广西西南石灰岩地区的15个自然保护区、3个林区和2个水库共20个调查点进行鸟类多样性研究,结果表明:该地区共记录到21目66科414种鸟类,其中留鸟245种,夏候鸟54种,冬候鸟97种,旅鸟18种;有60种被列为国家重点保护动物,21种被列入IUCN红色名录。弄岗穗鹛为该区特有种。繁殖鸟是桂西南石灰岩地区鸟类的主体,在地理区系上呈现出典型华南区区系成分和显著的北热带鸟类属性。本研究结果反映了该地区鸟类物种丰富、鸟类多样性高的现状,其生态系统功能和生态价值应值得继续关注,但相应的保护工作还亟需跟进。

The limestone area of southwestern Guangxi located in the south of China, which is named as biodiversity hotspot for conservation priorities. From 2002 to 2014, bird diversity researches were carried out in this biodiversity hotspot area, covering 15 nature reserves, 3 forestry centres and 2 reservoirs. Total of 414 bird species were accumulated recorded, which are under 66 families and 21 orders. Among them, 245 species were residents, 54 species were summer migrants, 97 species were winter migrants and 18 were passengers. Sixty species belonged to nationally protected birds, 21 species were listed in the IUCN red list of threatened birds. One species, Stachyris nonggangensis, was endemic species to the study area. More than 50% species were breeding birds. The avifauna was characterized by South China Region with typical north tropics property. The study presented a scene of abundant bird diversity in the limestone area of southwestern Guangxi. It plays an important role in maintaining ecosystem function. Thus, more researches and more protective measures should be carried out in the limestone area.