喜马拉雅灰叶猴栖息地利用和食性生物学研究(英文）

2006年4月至2007年4月在巴基斯坦克什米尔地区马希亚拉国家公园（Machiara National Park）对喜马拉雅灰叶猴(Semnopithecus entellus ajex)的栖息地利用和食性生物学进行研究。结果表明，冬天，叶猴首选的栖息地多为温暖湿润的针叶林和落叶林混交地区；夏天，它们则迁移至高海拔的亚高山灌木丛林里。喜马拉雅灰叶猴主要以植物的叶子为食，研究期间在该地区共发现49种被采食过的植物（夏季27种，冬季22种）。通过观察它们的所有食物，发现老叶(36.12%)比嫩叶(27.27%)更受欢迎，随后依次为果实17.00%、树根9.45%、树皮6.69%、花2.19%和根茎1.28%。

Habitat Utilization and Feeding Biology of Himalayan Grey Langur (Semnopithecus entellus ajex) in Machiara National Park, Azad Kashmir, Pakistan

Habitat utilization and feeding biology of Himalayan Grey Langur (Semnopithecus entellus ajex) were studied from April, 2006 to April, 2007 in Machiara National Park, Azad Kashmir (Pakistan). The results showed that in the winter season the most preferred habitat of the langurs was the moist temperate coniferous forests interspersed with deciduous trees, while in the summer season they preferred to migrate into the subalpine scrub forests at higher altitudes. Langurs were folivorous in feeding habit, recorded as consuming more than 49 plant species (27 in summer and 22 in winter) in the study area. The mature leaves (36.12%) were preferred over the young leaves (27.27%) while other food components comprised of fruits (17.00%), roots (9.45%), barks (6.69%), flowers (2.19%) and stems (1.28%) of various plant species.