【作者】 马志军； 丁长青； 翟天庆； 路宝忠； 李欣海；

【Author】 Ma Zhijun Ding Changqing Zhai Tianqing Lu Baozhong Li Xinhai(College of life sciences, Beijing Normal University, Beijing, 100875) (Institute of Zoology, Chinese Academy of Sciences, Beijing, 100080) (Shannxi Crested Ibis Conservation Station, Yang County, 723300)

【机构】 北京师范大学生命科学学院； 中国科学院动物研究所； 陕西洋县朱鹮保护观察站；

【摘要】 对朱鹮的巢址变化及其影响进行了研究.近20年来,朱鹮的营巢地逐渐由海拔1200m左右的中山地区向海拔800m左右的低山丘陵地区转移,巢树树种由栓皮株变为以马尾松为主.对朱鹮繁殖情况的研究表明:1981～1999年100巢的平均窝卵数为3.130±1.107个,99巢的平均出壳率0.765±0.349(1巢未产卵),86巢的平均幼鸟出飞率为0.769±0.330(14巢幼鸟出壳数为0).集址的变化对朱鹮的窝卵数、出壳率以及幼鸟出飞率没有显著影响,但在马尾松上营巢的朱鹮更容易受到蛇类的威胁.朱鹮巢址的变化与中山地区营巢条件的恶化以及低山丘陵地区营巢条件的改善有关.更多还原

【Abstract】 This article studied the change of nest sites and its effects on the Crested Ibis. In the recent 20 years, the average elevation of nest sites of the Crested Ibis changed from about 1200m in middle mountain area to about 800 m in hill area, the main nest species changed from Oak to Masson Pine. Study on the 100 nests from 1981 - 1999 shows that the average clutch size is 3.130 ± 1.107, average hatching rate is 0.765 ± 0.349, average fledging rate is 0.769 ± 0.330. The change of nest sites has no significant effects on the clutch size, hatching rate and fledging rate of the Crested Ibis. However, Snake has more serious threaten to the Crested Ibis nesting on the Masson Pine. We considered that the change of nest sites is related with the deterioration of the condition in middle mountain area and the improvement of that in hill area.更多还原