摘要
从2001年3月至12月,对生活在广西扶绥珍贵动物保护区内一孤立石山上的一群黑叶猴(Trachypi thecus francoisi)进行观察。通过收集有关栖息地利用的数据,探讨栖息地的破碎化对黑叶猴生态习性的影响。为分析人类活动对栖息地植被的影响,作者设置了10个植被样方,其中5个位于人类活动频繁的山坡;5个位于人类活动较少的山顶。观察结果表明,山坡的植物种类、多样性以及植物密度均低于山顶;山顶上黑叶猴喜食植物的密度也明显高于山坡。扶绥黑叶猴生境喜好程度分析表明,猴群偏好在食物丰富而人类活动少的山顶休息和觅食,而很少利用人类活动频繁的山坡。雨季里,猴群明显增加对山顶的利用率,而相应地减少对崖壁的利用。因此,扶绥黑叶猴对栖息地选择和利用可能是觅食利益和躲避人类活动干扰权衡的结果。黑叶猴选择崖壁上的突出平台或石洞作为夜宿地;通常重复利用少数几个夜宿地,并且会连续利用同一个夜宿地。
To explore the influence of habitat fragmentation on the ecology of the Franois＇s langur（Trachypithecus francoisi）,data on habitat use were collected from a group of Franois＇s langurs living in an isolated hill in the Fusui Rare Animal Nature Reserve,Guangxi Province,from March to December 2001.To identify the effect of human activities on vegetation,10 vegetation quadrats were sampled in the habitat,including 5 on the slopes with more human disturbance,and 5 on the hill-tops with less human disturbance.Because of human destruction,not only the number of plant species,diversity and density,but also the densities of preferred foods for Franois＇s langurs were less on the slope than those on the hill-top.Analyses of habitat use indicated that the langurs showed preference for the hill-top with abundant food resources and less human disturbance,and avoided to use the slope with more human disturbance.In the rainy seasons,langurs spent significantly more time on the hill-top rather than on the cliff.Therefore,habitat selection and use of the species may be resulted from the balance of feeding benefit and human disturbance.Franois＇s langurs used the platforms and caves on the cliffs as sleeping sites.They reused some sleeping sites,and tend to use the same caves on consecutive nights.
基金
广西环境工程与保护评价重点实验室研究基金
国家自然科学基金(30560023
30860050)
国家林业局叶猴监测项目
广西高校人才小高地创新团队建设项目
关键词
黑叶猴
破碎生境
栖息地利用
Franois＇s langur
Trachypithecus francoisi
Fragmented habitat
Habitat use
