摘要
从保护机构的建立、栖息地保护与改善、野生种群监护、野生种群现状、濒危等级下降、野化放飞和再引入几个方面综述了27年来中国朱鹮就地保护的成就。在1999-2007年朱鹮繁殖调查的基础上,总结了朱鹮繁殖区扩散、巢区植被变化、营巢地海拔变化和营巢树种变化等近年来朱鹮繁殖生态出现的变化。针对目前朱鹮繁殖区分布现状和朱鹮繁殖生态的变化,分析了产生变化的主要原因。
Crested Ibis （Nipponia nippon） is one of the endangered species in the world and ranks as the first class of national key protected animal in China. Till now, there is only one wild population in the world, which is distributed in Yang county and nearby areas of Shaanxi province. Since the re-discovery of wild population of Crested Ibis in China in 1981, the in-situ conservation work has made a great progress. The wild population has been increased from seven to more than 600 birds. In this paper, the current nest distribution is summarized and the variations of vegetation, elevation and nesting tree species were analyzed base on the survey in breeding seasons from 1999 to 2007. The results indicate that there are 42% of nests distributed outside the Crested Ibis National Nature Reserve. The vegetation around nest sites shows a significant difference between plain areas and mountains. In 2007, about 49% Crested Ibis breeding pairs nested in lower mountain areas with elevation from 600 m to 700 m, and the average breeding elevation was （698±156） m （Mean±S.D） and there is no significant relation between breeding success and elevation（R=0.121, R^2=0.015, F=1.488, P=0.225）. With the increase of wild population, the breeding area was dispersed, the breeding elevation was declined and the nesting-tree species appeared diversified. Based on the results, this paper discusses the reason of changing breeding ecology and makes suggestions for the Crested Ibis conservation in the future.
出处
《科技导报》
CAS
CSCD
2008年第14期48-53,共6页
Science & Technology Review
基金
国家自然科学基金项目(30570257)
关键词
朱鹮
就地保护
繁殖生态
crested ibis
in-situ conservation
breeding ecology
