Seasonal Changes of Ranging area by Hoolock Gibbon (Hoolock hoolock) at Nankang, Mt. Gaoligong between Spring and Autumn

Nankang District of GaoliGong National Nature Reserves was taken as research place, and four-month duration tracing was carried out for the activity area of a Hoolock gibbon family group composed of a female, a male and a child. Seven full-day tracing data were obtained in spring, 5 full-day tracing data were obtained in autumn, and effective tracing duration achieved 184.5 hours. Gibbon had relatively fixed feeding area and roosting area, and activity region area of Hoolock gibbon in spring was only 45.9% of activity region area in autumn. The night roosting area and feeding area of Hoolock gibbon in spring were centered in the grass and fruit planting area. The night roosting area and feeding area of Hoolock gibbon in autumn were not centered in the grass and fruit planting area and are more scattered, which indicates that human strawberry cultivation does not affect distribution of Hoolock gibbon, but grass and fruit picking in autumn disturbs feeding and roosting of Hoolock gibbon.