中文摘要：

2005年12月～2006年2月,对广西弄岗国家级自然保护区喀斯特森林中的黑叶猴行为进行观察。用瞬时扫描法收集黑叶猴的栖息地利用数据,以分析该物种在旱季对喀斯特石山的利用策略。研究结果表明,黑叶猴对不同坡向的选择有明显差异,其中东向比例最高,达到64.95%;其次是北向,占20.22%;南向和西向最少,分别占9.08%和5.74%。黑叶猴在旱季对坡向的选择可能与温度调节有关。黑叶猴对不同的山体部位的利用不尽相同,猴群对崖壁的利用比例（40.27%）明显高于山脚（29.52%）、山坡（22.18%）和山顶（8.04%）。黑叶猴主要选择崖壁作为休息场所,占总记录的55.92%;主要选择山脚作为觅食场所,占总记录的59.71%。还发现黑叶猴对乔木的利用率最高,占总记录的68.04%;其次为裸岩,占27.27%;灌木最少,仅为4.69%。黑叶猴对不同山体部位的利用差异可能与猴群对觅食利益和捕食风险的权衡有关。本研究为深入了解黑叶猴的石山适应策略提供了基础,也为该濒危物种的栖息地保护提供了依据。

英文摘要：

A group of Franqois＇ langur （ Trachypithecus francoisi） in the Nonggang Nature Reserve, Guangxi, China was observed from December 2005 to February 2006. Data on habitat selection of the study group was collected by instantaneous scan sampling method to explore the strategy of adaption to karst limestone hills during dry season. The results indicated that the east orientation constituted 64.95% of the hill parts used by the langurs, followed by north 20.22% , south 9.08% and west 5.74%, respectively. It could be regarded as the result of the langurs＇ thermoregulation. According to the total hill parts habitat records, the cliff was preferred, with a higher percentage （40.27%） both than bottom （29.52%）, slope （22.18%）, and the top （8.04%）. The use of vertical space showed significant variations with activities. Cliff was mainly selected for resting area, which contributed 55.92% to the total records, while the bottom was used for feeding sites with a 59.71% proportion in the records. Trees used as preferred microhabitat accounted for 68.04% of the total records. Bare rock and bush constituted 27.27% and 4.69% , respectively. The preference of the different hill parts could be resulted from the langurs＇ balance of the feeding benefit and prey risk. Our results provide data to comprehend the adaption strategy of langurs, and provide the foundation to habitat conservation.