中文摘要：

高原鼠兔数量的激增加剧了高寒草甸的退化，采取化学灭杀的方法控制高原鼠兔，只能暂时降低高原鼠兔的数量，在较短的时间内种群又会恢复到原来的水平。本文从理论上探讨不育控制对高原鼠兔种群的影响，建立了具有性别结构的高原鼠兔种群的数学模型，探讨在不育控制中两性的不育率对种群动态的影响并比较不育控制与化学灭杀的区别。结果表明：不育控制比化学灭杀在抑制和消灭种群上都具有更好的效果；在不育控制中雌性的不育率具有更为重要的作用，所以在利用不育技术控制高原鼠兔时要特别注意雌性不育率。

英文摘要：

The proliferation of plateau pika （ Ochotona curzonia） aggravates the degradation of alpine meadow, and rodenticides are commonly used to annihilate plateau pika. However, the poisoning program can only transitorily reduce the abundance of plateau pika, and the remnant population can recover rapidly. Therefore, to control plateau pika via contraception is considered. This paper discussed in theory how contraception control affects the population of plateau pika. Mathematical models of plateau pika with sexual structure were formulated to assess the effects of two sexes＇ contraception rates on the dynamics of plateau pika population, and to clarify the difference between contraception control and lethal control. It was indicated that contraception control would have better effects than lethal control on eliminating or depressing plateau pika population. In contraception control, the contraception rate of female is more important, and thus, more attention should be paid to it.