摘要
根据５１５只甘肃鼢鼠的年龄分布和性比，编制了甘肃鼢鼠种群的静态生命表，绘制了死亡曲线和存活曲线图，计算了甘肃鼢鼠种群的内禀增长能力。结果是：甘肃鼢鼠种群的净增殖率Ｒ０＝１．８０７５，内禀增长能力ｒｍ＝０．４０５６，种群数量的翻倍时间大约为２０个月，周限增长率λ＝１．００２３。以上数据表示：甘肃鼢鼠是一个增长速度缓慢，数量相对稳定的动物种群，这对防治比较有利。
In order to analyze the population dynamics of Gansu Zoker(Myospalax cansus), It is necessary to know its natality, survivorship rate and mortality, etc. The static life table is set up on the basis of age structure and sex ratio of 515 zokers collected from Xiji county, Ningxia Autunomous Region during Apr. 1991-Jun. 1993. Some essential population data obtained from the life table are as follows: The net reproductive rate(R0) was 1.807 5. The innate increase capacity (rm) was 0.405 6. It takes about 20 months for its population doubling. The finite increase rate ( λ) was 1.002 3. The survivorship curve and mortality curve were drawn up. This data indicated that the increment of Gansu zoker in population was slow and stable. The information above will be useful in the zoker population control.
出处
《水土保持通报》
CSCD
北大核心
1998年第3期20-23,共4页
Bulletin of Soil and Water Conservation
基金
"八.五"国家科技攻关项目
关键词
甘肃鼢鼠
静态生命表
内禀增长能力
种群动态
Gansu zoker(Myospalax cansus)
static life table
innate capacity of increase
population dynamic
