关键词: 滇金丝猴, 夜宿地, 海拔, 季节变化, 植被类型

Abstract: Data on seasonal selection and use of sleeping sites of a group of Yunnan snub-nosed monkeys (Rhinopithecus bieti)at Gehuaqing in Baimaxueshan Nature Reserve were collected from September 2005 to September 2006.Fifty-four sleeping sites were identified and were used 137 nights during the 13 months investigation. Altitudinal distributions of investigated sleeping sites were significantly seasonal for our study group. Sleeping sites mainly distributed at a belt of 3 200 -3 400 m (ASL)that confined in the conifer and broadleaf mixed forest. The monkeys slept at night at the highest average
elevation of 3 352 m in summer and at the lowest 3 082 m in spring.The monkeys preferred to stay at the west-faced and south-faced slopes at night,but avoided sleeping at north-faced slopes at night in summer and autumn. Some sleeping sites were repeatedly used when the group passed by and most sleeping sites were slept only once during the whole study period.Why the monkey group only repeated at some sleeping sites need further study.

Key words: Altitude, Seasonal variation, Sleeping sites, Vegetation type, Yunnan snub-nosed monkeys (Rhinopithecus bieti)