From April to May 1998, activity rhythm of captive Amur tiger in spring was studied by way of instantaneous and scan sampling, focal animal sampling and all-occurrence recording methods in Harbin Zoo.

• 采用瞬时扫描取样法、焦点动物取样法和全事件取样法 ,在哈尔滨动物园对 4只笼养东北虎的行为及活动规律进行了研究。