Abstract: By the method of focal-sampling, the diurnal behaviors (including foraging, vigilance, resting, moving, and ‘others’) of Gazella subgutturosa in Kalamaili Mountain Nature Reserve were observed in December 2007, with the behaviors time budgets and activity rhythms studied. For the females, 680% of time was spent on foraging, 70% on vigilance, 196% on resting, 50% on moving, and 04% on ‘others’; while for the males, 29.6% of time was spent on foraging, 19.2% on vigilance, 29.3% on resting, 20.6% on moving, and 13% on ‘others’. Both for the females and for the males, there existed significant differences (P<001) in the time budgets of their behaviors except ‘others’. For the females, the peaks of foraging, moving, vigilance, and resting were at 11:00〖KG-*2〗-〖KG-*7〗12:00, 13:00〖KG-*2〗-〖KG-*7〗14:00 and 17:00〖KG-*2〗-〖KG-*7〗18:00, 13:00〖KG-*2〗-〖KG-*7〗15:00 and 18:00〖KG-*2〗-〖KG-*7〗19:00, 13:00〖KG-*2〗-〖KG-*7〗14:00, and 12:00〖KG-*2〗-〖KG-*7〗13:00 and 16:00〖KG-*2〗-〖KG-*7〗17:00, respectively; while for the males, the peaks of corresponding behaviors were at 10:00〖KG-*2〗-〖KG-*7〗11:00, 13:00〖KG-*2〗-〖KG-*7〗14:00 and 17:00〖KG-*2〗-〖KG-*7〗18:00, 13:00〖KG-*2〗-〖KG-*7〗14:00 and 18:00〖KG-*2〗-〖KG-*7〗19:00, 13:00〖KG-*2〗-〖KG-*7〗14:00 and 18:00〖KG-*2〗-〖KG-*7〗19:00, and 15:00〖KG-*2〗-〖KG-*7〗16:00, respectively. Among different periods of time, the females’ activity rhythms of foraging, moving, vigilance, and resting, and the males’ activity rhythms of foraging and vigilance were significantly different.

Key words: Riverine organic carbon, Terrestrial ecosystem, Global carbon cycle, Drainage erosion, Radiocarbon, Anthropogenic activities