摘要
以实体观测垂距法对贺兰山春季马鹿数量进行了调查.结果显示,种群密度为(2.15±0.66)头/km2,总数量为(1 705±523)头,1997—2005年春季马鹿数量累计增长了28.8%,年平均增长率为3.68%,比1983—1997年14 a间的年平均增长率2.38%提高了1.3%,种群成体与幼体个数比为3.78∶1,成体中雌性与雄性个数比为1.83∶1,对成体性别比的变化及种群增长速度进行了讨论.
In spring of 2005, the average population density of red deer （Cervus elaphus） in Helanshan Mountain of Ningxia is 2. 15±0. 66 ind. /km^2, total number is 1 705±523,the increase rate of their number adds up to 28.8% from 1997＇s autumn to 2005＇s spring, the average rate of increase is 3.68%, higher than the average increasing rate（2. 38%） of 14 years from 1983 to 1997. The ratio of adult to juvenile is 3.78 ： 1, the ratio of adult female to male is 1.83 ： 1 and the change of sex ratio and the speed of population increase were discussed.
出处
《宁夏大学学报（自然科学版）》
CAS
北大核心
2006年第3期263-265,共3页
Journal of Ningxia University(Natural Science Edition)
基金
宁夏大学自然科学基金资助项目
关键词
贺兰山
马鹿
种群数量
种群结构
种群动态
Helanshan Mountain
red deer
population quantity
population structure
population dynamics
