依据中国哺乳类野生种群与生境现状,我们利用IUCN Red List Categories and Criteria(Version 3.1),Guidelines for Using the IUCN Red List Categories and Criteria和Guidelines for Application of IUCN Red List Criteria at Regional and National Levels(Version 4.0),评价了中国所有已知的673种哺乳动物的濒危状况。本次评估了71种《IUCN濒危物种红色名录(2015)》没有评估的哺乳动物,还评估了60种《IUCN濒危物种红色名录(2015)》误认为中国没有分布的哺乳动物。发现中国有3种哺乳动物"野外灭绝",3种"区域灭绝"。受威胁中国哺乳动物共计178种,约占评估物种总数的26.4%,高于IUCN濒危物种红色名录的物种平均受威胁率(21.8%)。中国哺乳动物1/4的特有种属于受威胁物种。受威胁比例最高的目是灵长目、食肉目与鲸偶蹄目。多数省区的受威胁哺乳动物物种占本省区哺乳动物总数的20–30%。中国哺乳动物种类多分布在中国第二级地理阶梯。生活在高海拔地区的哺乳动物虽然种类少,但是受威胁哺乳动物的种类比例高。过度利用、生境丧失和人类干扰名列受威胁哺乳动物致危因子的前3位。自从1989年《中华人民共和国野生动物保护法》实施以来,一些中国濒危哺乳动物的生存状况得到了改善。然而,鉴于中国哺乳动物区系的独特性和多样性,以及中国地形地貌的复杂性,如何拯救这些濒危物种仍是中国生物多样性保护的一项艰巨任务。
To understand the pattern of vigilance behavior in Père David’s deer and its adaptation to human disturbance,we carried out an experiment in the Dafeng Père David’s Deer Nature Reserve.In a large paddock,we observed vigilance behaviors of free-ranging Père David’s deer.In spring and summer,we used a laser-range finder to measure the alert-distance of the Père David’s deer group in the large paddock.Our data indicate that the vigilance behaviors in Père David’s deer included scanning,stare,walking away,flee,alarm calls and pawing ground for alert.After statistical analysis,we found that:(1)the expression of vigilance behavior in Père David’s deer was depend on intensity of human disturbance;(2)keeping seasonal factors constant,there was a significant difference among different types of alert distances;furthermore,the stare distance was significantly longer than the distance of walking away and fleeing;(3)the stare distance in semi-free ranging Père David’s deer in summer was significantly greater than in spring,but the distances of walking away and the distances of fleeing exhibited no significant difference between the two seasons.These results indicated that:(1)the main factor affecting vigilance behavior in Père David’s deer was human disturbance under the captive breeding situation and(2)Père David’s deer adopted different vigilance behavior in response to human disturbance under different circumstances.In animal conservation,it is important to consider the relationship between vigilance behavior and human disturbance.
