Reproduction and mortality are two primary factors to affect population quantity dynamic.
种群的数量季节消长主要是繁殖和死亡两因素相互作用的结果。
Objective Toanalyze the trend of population quantity and the type of population structure in Shanxi.
目的分析山西省人口数量、结构类型变化趋势。
The population quantity is obviously changeable, but population culture construction is behind still.
人口质量显著改变，但人口文化结构依然落后。
Objective The study aimed to learn the population quantity and dynamic of Populus pruinosa in Tarim basin.
目的了解塔里木盆地灰叶胡杨种群的数量及动态。
Significant difference can be found in pest's population quantity among different rape varieties and cultivate patterns.
油菜品种和栽培方式间害虫种群数量存在显著差异。
The paper analyzes distribution species, habitat settings, population quantity, living habit and characteristics, residence condition and serial features.
分析了分布种类、栖息生境、种群数量、生活习性、留居情况、区系特征。
The result revealed that there was obviously changed in age structure and reproduction structure of L. lagurus with the decline of the population quantity.
结果表明，随着草原兔尾鼠数量的下降，种群的年龄结构和繁殖结构都发生了明显的变化。
In the stage of field population study, most study focus on the congregation and immigration of insect population, the investigation of natural population quantity.
在田间种群研究阶段，主要进行种群聚集与扩散迁移的研究和自然种群的数量调查。
The reason why the population becomes the "heavy burden" of the nation economy is the great population quantity, low population quality and insufficient development and use of human resource.
人口之所以成为国家经济的沉重包袱，根本原因是人口数量过多、人口素质低下、人力资源开发利用不足。
There are a lot more methods to strengthen PM, four of which are put forward in the thesis: 1. Controlling population quantity, improving population quality, adjusting population structure; 2.
加强人口管理的方法很多，本文提出了四个主要方法，即：1、控制人口数量，提高人口素质，调整人口结构；
The increasing emphasis for the growing population of old people is in quality rather than quantity of years.
关于老年人人口的增长问题，人们越来越重视的是质量而不是数量。
Once the hare population has declined, it takes two to three years for the quantity of twigs to recover.
一旦野兔数量减少，嫩枝的数量需要两到三年的时间来恢复。
Economy growth rate of an area depends on the quantity of the migration population.
迁移的人口数量直接决定了一个地区的经济增长速度的快慢。
"Compared to the quantity, the quality of population is more important. Many senior citizens are still participating in social activities, " said Song.
他强调到：“相比于数量，人口的质量更加重要。许多老年人依然在参加社会活动。”
In serious rocky desertification area, the indexes of density of population, gathering degree of peasants, workforce quantity are relatively lower.
在石漠化严重的地区，人口密度、农户居住的聚集程度、单位面积上的劳动力数量等人口指标相对较低。
The calculation of the employment rate depends on two indexes: one is the general quantity of the workforce resources, another is the number of the employed population.
就业率的计算依赖于两个重要指标，一是劳动力资源总量，二是就业人口数。
The hereditary analysis results of some quality properties and quantity properties proved there was greater separation on properties in the resource population.
部分质量性状和数量性状的遗传分析结果说明资源群体在各个性状上均有较大的分离。
While the quantity of the oversea seafarers and the share of the world seafarer market is very low, which is not proportioned to the great power of population and shipping.
然而，我国目前海员外派的数量和在国际海员劳务市场的份额都很低，这与我们人口大国和航运大国的地位极不相称。
Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.
早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量，进而间接地使鞘蛾种群密度降低。
The relationship between quantity characteristic and the size of clone of Puccinellia Tenuiflora clone population at flowering stage sampled by unit area.
通过单位面积取样调查，定量地分析了开花期星星草无性系种群的数量特征及其与无性系大小之间的关系。
The distribution and quantity of Felis lynx population in the northeast have been found out by the three-stage sampling method.
我们利用三阶抽样法，查清了东北地区猞猁种群的分布及数量情况。
The influences on bird species caused by grazing disturbance are not parallel, because different population has different quantity.
放牧干扰对群落中各种鸟的影响不平行，体现在不同种群数量的变化。
Global population growth, warmer climate, more serious environmental pollution, quickened urbanization, etc, those are the factors affect its quality and quantity.
全球人口的增长、气候变暖、环境污染的加重、城市化进程的加快等都是影响水资源质和量的关键因素。
The population control is in the sense of keeping simultaneously the quantity of population in a moderate size to enlarge the quality of population continuously.
人口控制就是把人口数量控制在一个适度的范围内，同时不断提高人口质量。
The factors of population including both quantity and quality are important account for ecological crisis.
人口因素是生态危机的重要解释因子，可分为数量和质量两大问题。
It also affected the quantity of mouse population.
当然，对鼠类种群数量也有一定影响。
Our country population base is big, public kindergarten's quantity satisfies the people with difficulty to the preschool education demand, the private kindergarten emerges massively in our country.
我国人口基数大，公立幼儿园的数量难以满足人们对学前教育的需求，私立幼儿园在我国大量涌现。
We have been faced with many new problems and situations because of increasing quantity of transient population and the appearance of new policies in transient population administration.
外来流动人口的增加和外来人口管理方面新政策的出台，使现阶段的外来人口管理工作面临着许多新情况和新问题。
The moral requirement of our country on the population multiplication is: limit the quantity of population and improve the quality of population.
我国在人口生产方面的道德要求是：切实控制人口数量，提高人口质量；
The moral requirement of our country on the population multiplication is: limit the quantity of population and improve the quality of population.
我国在人口生产方面的道德要求是：切实控制人口数量，提高人口质量；
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