甘肃尕海国际重要湿地黑颈鹤的数量、迁徙、繁殖与保护管理

Number,migration,breeding and conservation management of Black-necked Cranes(Grus nigricollis)at Gahai,Gansu,China

2004—2014年,于每年3月初—11月中旬采用线路调查方法监测尕海国际重要湿地黑颈鹤(Grus nigricollis)的数量。对郭茂滩天鹅湖边上的一对黑颈鹤采用定点观察法观察其繁殖行为。监测表明,每年有90只左右的黑颈鹤在尕海国际重要湿地中越夏繁殖;每年3月中旬开始陆续迁回,于11月上旬全部迁离。黑颈鹤的孵化日期约为33天,且有重复产卵孵化现象。

We surveyed Black-necked Cranes(Grus nigricollis)at Gahai,Gansu Province from early March to mid-November every year from 2004-2014.During the count months each year,we observed breeding behavior of a pair of Black-necked Cranes nesting on the lake shore of Tianehu at Guomaotan.There were about 90 Black-necked Cranes breeding or summering at Gahai.The cranes begin to arrive at Gahai in mid-March and leave for their wintering ground by the end of November each year.The incubation period was~33 days.