Abstract: The daily activity rhythm and time budget of Sichuan sika deer ( Cervus nippon sichuanicus) were studied in the Tiebu Nature Reserve of Sichuan province during April , 1997. 191 and 29 individuals were observed by scan sampling in daytime and night respectively. The results indicated that the diurnal activity rhythmof Sichuan sika deer was characterized by two peaks : first peak at 08 : 30 and second peak at 19 : 00. But they were more active in night than in day time , except at about 01 : 30. By the object sampling , 69 individuals of Sichuan sika deer recorded. It was concluded that their most activity time were spent in feeding and moving (90 %) . Among them , feeding accounted for 74.27 % in daytime and 58.90 % in night , and moving made 15.20 % and 31.29 % respectively. Sunlight , food and human activities are major factors that affect the daily activity rhythm and time budget of Sichuan sika deer.

Key words: Sichuan sika deer ( Cervus nippon sichuanicus), Daily activity rhythms, Time budget

摘要： 1997 年4 月, 在四川铁布自然保护区用直接观察法对220 头次四川梅花鹿群的昼夜活动节律和时间分配进行了观察。结果表明, 鹿群春季昼夜活动的规律性较强。白昼, 鹿群活动呈现明显的双峰型, 2 个高峰时段为08 : 30 和19 : 30 前后, 活动频率分别为71.9 %和94.13 % , 其他时间多处于休息状态; 鹿群夜间活动强于昼间,活动频率均在61%以上, 仅在半夜01 : 30 前后有一个相对不活跃期。同时发现, 春季活动高峰期约90%的活动时间被四川梅花鹿用于采食和移动。这可能与光照、食物及人类活动的影响有关。

关键词: 四川梅花鹿, 昼夜活动节律, 时间分配