中文摘要：

为了研究黑叶猴在片段化生境中的适应能力,2006年1～12月,采用焦点动物取样法和连续记录技术于每月初连续观察8 d,记录片段化栖息地中的一群黑叶猴觅食行为,同时采用样带法监测黑叶猴家域内食物可获得性的季节性变化。结果显示,黑叶猴以61种植物为食,月平均食物种类为21.8种。黑叶猴取食的食物部位中,嫩叶占比例最大,达55.8%,其次为果实的比例达12.4%,其他依次为成熟叶占12.1%,种子10.6%、花4.3%、芽2.7%和树皮2.4%。成熟叶的可获得性最大,可获得性指数在75%（2月）到100%（7～9月）之间;其次为嫩叶,可获得性指数在25%（11月）到94%（7月）之间,芽、花和果实等食物部位的可获得性指数在20%以下。取食各食物部位的时间与相应部位的可获得性指数间没有显著的相关关系（P〉0.05）。月食物种类与生境中食物种数的可获得性间没有显著的相关关系（P〉0.05）。因此,在片段化的栖息地中黑叶猴选择性地利用生境中的食物资源。

英文摘要：

Limestone habitats are fragile and habitat degradation due to disturbances can easily reduce the food resource of primates living in these areas.In order to explore these primates＇feeding adaptation in habitat fragmentation,the foraging ecology of a group of Francois＇s leaf monkey（Trachypithecus francoisi） in a severely fragmented habitat in Fusui County, Guangxi Province,China was studied via focal animal sampling and continuous recording.This study was conducted during the first 8 days of each month in 2006.In the following 3 days,the seasonal food availability of plant species and parts were studied via quadrat monitoring.The results indicated that Francois＇s leaf monkey consumed 61 plant species with a monthly average of 21.8 species.Mature leaves were the most abundant food resource with food availability index ranging from 75.0% in February to 100.0% in the period from July to September.Immature leaves were the second most abundant ranging from 25.0% in November to 94.1% in July.The availabilities of other plant parts were all less than 20%.The monthly plant species consumed by Francois＇s leaf monkey had no significant relationship with species availability in the habitat（P 0.05） and the time spent on different plant parts had no relationship with the availability of the relevant plant parts（P 0.05）.They selectively use food resources of in fragmented habitat.