关键词: 白头叶猴, 时间分配, 扫描

Abstract: By studying on the time budgets of white-headed langur，presbytis leucocephalus，the interior and envionmental factors which caused the time budgets of the population were discussed．This factors changes the time budgets of the population might largely influence the energy requirment of the population and theanimal of each age-sex classes. The result of analysis showed that the time budgets reflected the comprehensive effects of the factors on the population．The difference of time budgets of northern and southern populations of white-headed langur in southwestern of Guangxi Province is due to the different of the geographical area and the protective conditions of vegetation According to the behavioral factors observed, movement correlated most significantly to rest. The structure of the group caused the differences of the time budgets in the agesex classes．

Key words: Presbytis leucocephalus, Time budgets, Scan