size of population

Do predators and parasites regulate the population size of their prey?

捕食者和寄生者是否能够调节其猎物种群的大小 呢 ?

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The mean effective population size could be estimated as a harmonic means of the Ne.

估计出平均有效种群大小,作为所有世代Ne的调和平均值.

词典精选例句

An initial study on the population size and distribution of bottlenose dolphin in the East China Sea

东海水域瓶鼻海豚种群数量和分布的初步研究

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the symptoms of stressed ecosystems include changes in nutrient cycling, primary productivity, species diversity, individual size of dominant populations, succession direction, incidence of diseases, size of population, and so on.

受胁生态系统的症状包括营养循环、初级生产力、物种多样性、优势种群个体大小、演替方向、发病率和种群数量等的变化。

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Based on the theory of the relationship between investment and consumption in general demand, this article discusses what relationship between population size and economic growth, and how population growth of moderate degree has brought energy and opportunity to economic growth in India.

本文从总需求中的投资和消费角度出发，就印度人口规模与经济增长之间的关系问题，考察人口对印度经济增长带来的活力和机会。

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We can use simple regression to work out the relationship between size of population and revenue.

我们可以使用简单的回归分析找出人口大小与收入间的关联.

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Compared with the pre-war Kingdom, the size and population of this new Hungary were reduced by about two-thirds; about one-third of the Magyar population became minorities in the neighbouring countries.

比起战前的王国，新匈牙利的大小和人口按大约减少三分之二；大约三分之一的马扎尔人成为了邻国的少数民族。

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The seasonal ecological features of phytoplankton community including its species composition, population size, dominant species, saprobic indicator, diversity index and diatom biotic index were preliminarily studied at 22 sampling stations in the Chaohu Lake, Anhui Province.

对巢湖浮游植物在22个样点，四季采样，进行了种类组成、种群数量、优势种、污染指示种，多样性指数及硅藻指数等群落生态学的初步研究。

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Finally, the effect of house market-positioning is expatiated respectively by population size and income, demographic composition, population migration and family size.

最后，针对人口规模与收入、人口构成、人口迁移及家庭规模和类型对我国住宅市场定位的影响分别展开阐述，并分别提出应对措施。

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Since the human activities, many living and breeding area were damaged and led to patch or fragile environment and the decreasing of the population size.

人类活动使种群的栖息地斑块化，进而使其成为脆弱生境，导致种群数量减少。

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Against a background of the worldwide shortage of energy and other natural resources, it would be like "levering the earth up" for China to keep her economic growth rate at 5% annually, considering her large size of population and shortage of natural resources.

在世界能源、矿产形势严峻的背景下，如果经济能以5%的速度持续增长，对人口众多、人均资源少的中国来说，也堪称完成了一件撬起地球的伟大事业。

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Facing a dilemma of a huge size of population and an ageing population structure, this paper suggests a fertility policy be adapted to properly modify the age structure of population in the context of population control.

面对中国未来人口数量庞大与人口年龄结构老化的两难境地，主张在控制人口数量的大前提下，选择适度调整人口年龄结构的生育政策。

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The effect from the quantitative structure and the relative correlations should be taken into consideration on estimation of the effective size of the population based on the peculiarity in the conserved population.

针对动物保种群的特点，指出了现行群体有效含量估计方法之不足；提出在估计保种群有效含量时应同时考虑来自群体数量结构与亲缘关系两个方面因素的影响；

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