四川梅花鹿春季昼夜活动节律与时间分配

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6l％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。

Daily Activity Rhythm and Time Budget of Sichuan Sika deer(Cervus nippon sichuanicus) in Spring

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 rhythm of 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.