摘要
对 1 992～ 1 994年新疆巴音布鲁克天鹅湖 3个雁岛定点观察表明 ,斑头雁巢密度为 33～ 55个 ,或 0 .59个巢·m- 2 ,其分布不均匀 .统计 1 84个巢 ,平均窝卵数 X±SD =4.47± 2 .1 9枚 .产卵高峰在 5月上、中旬 ,6月中旬大批幼雏破壳而出 ,为早成鸟 .8月上中旬幼雁长至 55～ 65d龄始飞 .繁殖期要比青海等地迟 1 0～ 2 0d .
From 1992 to 1994, stationary obesrvations were taken on the breeding ecology of Anser indicus in Bayinbuluke Swan Lake of Tianshan Mountains. The results show that its nest density is 0.59 nest ·m -2 or 33～55 nests on each island, and the nests are unevenly distributed. For 184 nests observed, the average number of clutches in each nest is 4.47±2.19 eggs. The climax of egg laying period comes in early or middle May, and that of incubation period is reached in middle June.The goslings can fly 55～65 days after hatching in early August.The reproductive period is 10～20 days later than that in Qinghai region.
出处
《应用生态学报》
CAS
CSCD
1997年第3期287-290,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金!( 3 91 70 1 1 9)
中国科学院新疆分院院长择优支持基金
关键词
鸟纲
斑头雁
集群营巢
繁殖生态
天山
Anser indicus,Aggregated nests,Breeding ecology,Tianshan Mountains.
