云南碧塔海地区黑颈鹤的数量和分布

Numbers and distribution of Black-necked Cranes(Grus nigricollis)wintering at Bitahai Wetland,Yunnan,China

掌握物种的数量和分布等基础信息在濒危物种保护和管理中具有重要价值。云南碧塔海地区是黑颈鹤(Grus nigricollis)中部越冬种群的重要分布地,但对其种群数量和分布仍缺乏详细数据。2004和2008年冬季,采用绝对数量统计法对碧塔海保护区以及周边沟谷沼泽的黑颈鹤分布和数量进行了调查。结果发现:越冬黑颈鹤总数量约为40只,其中82.5%~92.3%的个体分布在吉利古,其他个体分布在属都湖北、弥里淌、冈察坝、海头和五彩草甸。

It is essential to get information of population size and distribution of endangered species.The Bitahai Wetland is one of the most important wintering sites of the central population of Black-necked Cranes(Grus nigricollis).There is still little information about this bird wintering at Bitahai Wetland.In winters of 2004 and 2008,we conducted counting surveys covering all wetlands at Bitahai Nature Reserve and adjacent areas.Our results showed that there were about 40 Black-necked Cranes wintering in this area.Of the 40 birds,82.5%-92.3%individuals used the Jiligu Valley,and the rest were at Northern Shudu Lake,Militang valley,Gangchaba Valley,Haitou,and Wucaicaodian.