新疆托木尔峰国家级自然保护区北山羊种群密度与栖息地利用(英文)

Population Density and Habitat Utilization of Ibex (Capra ibex) in Tomur National Nature Reserve, Xinjiang, China(in English)

摘要: 2005年10—12月对新疆托木尔峰国家级自然保护区北山羊(Capra ibex)的种群密度与栖息地利用进行调查。种群密度调查显示该地区北山羊平均群大小为8.43只，种群密度为269.76只／100 km²；栖息地选择调查结果显示北山羊广泛活动在海拔2 500—3 000 m的区域范围内，对距悬崖距离、坡度、地形和植被类型有一定选择倾向，它倾向在悬崖附近(<100 m)、坡度大于30°而小于45°和崎岖的山地活动，会避开草地和平坦山坡。北山羊这种栖息地利用模式可能与满足自身安全需要有关。

Abstract: Surveys was conducted to study the population density and habitat utilization of the ibex (Capra ibex) in Tomur National Nature Reserve during October-December 2005. The results are as follows: ① The mean group size of the ibex in Tomur Nature Reserve is 8.43 and the population density is 269.76／100 km²; ② The ibex prefer areas with steep slope (between 30°-45°), broken substrates and cliffs nearby (<100 m). They avoid grasslands and flat hillsides; ③ The probable reason for this habitat selection is self-protection.