阿鲁科尔沁沙地鸟类区系组成及其特征

A Study of the Avifauna in Alukeerqin Sandland

对内蒙古阿鲁科尔沁沙地的鸟类区系进行了调查研究.共记录到鸟类139种,隶属于15目36科83属.其中留鸟21种,夏候鸟78种,旅鸟38种,冬候鸟2种.繁殖鸟中古北界种类89种,占繁殖鸟总数的88.9%.该地区处于东北区和蒙新区过渡地区,鸟类区系反映出东北区、蒙新区成分相互渗透的过渡性特征.

The results of our studies on the avifauna in Alukeerqin sandland are presented. The study have been carried out in the years 2000 and 2002. The Alukeerqin sandland lies within the boundaries of Alukeerqin banner Chifeng city in Neimongol Autonomous Region, Northern China, between 43°22′- 44°33′N, 119°45′~120°45′E,its elevation is 309~548 m above sea level. The average annual temperature is 6 ℃, the average annual rainfall 318 mm, and the average annual wind velocity 3~3.5 m/s. In this investigation, 139 bird species were recorded.They belongs to 15 orders, 36 families, 83 genera, among which 21 species are residents, 78 species are summer breeders, 38 species are migrants, 2 species are winter residents. Among breeding birds, 89 species are Palaearctic birds, 5 are Oriental.The district is situated in the transitive district of Northeast Region and MongoXinjiang Region, the avifauna reflects the transitive characteristic that the components of Northeast Region and MongoXinjiang Region saturate each other.