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作 者 ：佟富春,肖以华,白哈斯,孙丹婷,高玮,王庆礼

期 刊 ：生态学报 2002年 22卷 9期 页码：1485~1490

关键词：栗斑腹；繁殖生态；干草原；白城地区；

Keywords:Jankowski′s Bunting, breeding ecology, grassland, Baicheng region,

摘 要 ：栗斑腹在吉林省为留鸟 ,一年可繁殖两次 ,其雏鸟为典型的晚成鸟。 4月末开始有求偶追逐和争雌行为 ,5月中旬产卵。雌雄鸟筑巢时间分别是 43 min/d和 3 6min/d(筑巢第 4天 )。平均窝卵数为 5 .0 9± 0 .5 8枚 /巢 (n=3 1 ) ,孵卵前、中、后期雌鸟孵卵占白天活动时间的 3 5 %、74.5 %和 67.6% ,孵化期为 1 2 d,孵化率为 3 6.3 % ,2、8日龄喂雏分别为 4.5次 /h和 9.0次 /h。雏鸟的体重及外部器官的发育除嘴峰外 ,生长曲线均符合 Logistic方程 ,而嘴峰长的生长近似直线 ,栗斑腹雏鸟生长发育体重的生长模型为 :W =1 4.95 /1 +(e- 0 .552 ( t- 3.6 3) ) ,雏鸟 1 1日龄后出飞 ,繁殖成活率为 2 7.7%。

Abstract:This study was carried out at Dagang forestry farm in Baicheng region, Jilin Province, China (122°47′～124°04′E,45°28′～46°18′N ). The study sites, about 1000hm 2,are distributed in the farm, which is located at edge of Songnen Plain, ranging from 130m to 160m above sea level. The climate is featured as east monsoon climate having hot dry summers and cold snowy winters. Annual temperature is averaged 11℃, annual precipitation 395 1mm, and unfrosted days about 135d.The vegetation is dominated by various gras...

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