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汉语拼音：zhǒng qún

也叫群体。同种生物在特定环境空间内和特定时间内的所有个体的集群。能自由交配、繁殖。种群反映生物个体所不具备的特征，包括密度、年龄及性别比率、出生和死亡率、迁入和迁出率、种内和种间的相互关系。动物种群还具有占有领地、迁徙活动和社会行为等特征。种群在分类学、遗传学、生态学研究中都是基本单位。

• Britain has the largest and most flourishing fox population in Europe.

  英国拥有欧洲最大也是最具繁殖能力的狐狸种群。

• A group of individuals can be called a population.

  个体的集合称为种群.

• The word population merely denotes all the individuals in a given area.

  种群一词仅仅指的是某一地区的全部个体.

• Forested areas sustain almost as high a population as the agricultural sites.

  森林区的种群密度与农业区同样的高.

• A low population is not sufficient to halt a decline.

  低的种群密度不足以立即阻止种群下降.

• The crash reduces the population size toward the original level.

  随着暴跌,导致种群数量回到它的初始水平.

• Not much information is available about the structure of populations of earthworms.

  关于蚯蚓种群结构方面有价值的报道不多.

• It is therefore essential to know the age distribution in the population.

  所以,了解在该种群中的年龄组配状况是很重要的.

• Consider the entire production of seedlings as the next population.

  把所有的苗木全部作为下一代种群.

• Concurring with expectations, the degree of polymorphism was highest in the central.

  正如所料, 多型性程度在中部种群中最高.

• At high populations aggressive individuals will be relatively more fit.

  在高的种群中,侵犯性个体将有更强的适应性.

• The population density is evened out.

  种群密度亦趋于均匀化.

• How do the populations maintain this homeostasis?

  种群如何能维持这种内稳定状态 呢 ?

• Insect population dynamics has always received much attention.

  昆虫种群动态的研究一直受到重视.

• Periodic local catastrophes reduce populations.

  周期性的局部地区的灾变降低了种群的数量.