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种群数量

n.population number
网络population quantity; Population size; group size

种群数量

英-汉网络释义

种群数量

population

雅思口语分类词汇：动物_新东方网 ... elegant 优雅 population 种群数量 fierce 凶猛的 ...

population quantity

专业词汇在线翻译、... ... 人口问题 population problem 种群数量 population quantity 人口相对危险度 population relative risk ...

population number

物种数量,species... ... ) Species quantification 物种定量 ) population number 种群数量 ) species number 物种数量 ...

Population size

生物多样性 - 免费文档下载 ... 保护级别 Protection grade 种群数量 Population size 濒危等级* Endangerment category ...

group size

...的身体结构与生活习性，比如场地（origin）， 种群数量（group size），身长（length）或身高（height），体重（weight）…

例句：

"Cod in the North Atlantic is a classic case of a crash, " he said .

“北大西洋鳕鱼是种群数量骤减的一个典型例子，”他说。

Naturally , Stolzenburg says , scientists are concerned about the long-term impact the rats might have on the auklet population .

Stolzenburg 说，很自然，科学家们非常关心老鼠对小海雀的种群数量造成的长期影响有多大。

It was helpful for controlling the pest population to understand the relationship between temperature and rice leaf roller population .

研究温度与稻纵卷叶螟种群数量变动的关系，可为害虫种群的控制提供科学依据。

So many giant bluefin have been hauled out of the Mediterranean that the population is in danger of collapse .

如此众多的大金枪鱼从地中海里捕捞上来，导致其种群数量急剧下降。

The ant is one of the superior groups of huge soil animals in Kaifeng . The number of ant species is various and the ant exits in many areas.

蚂蚁是河南开封地区大型土壤动物的优势类群，其种群数量庞大，分布较广。

Writes Sharon Begley of Newsweek , that boom-and-bust cycle has not been seen for several years , and the number of lemmings is declining .

莱特斯·莎伦·贝克雷在新闻周刊上说，旅鼠种群数量的循环已经有好几年没有出现了，旅鼠的数量在不断地减少。

But many populations are also affected by an invasive geranium from the Mediterranean which is out-competing the butterfly's host plant .

但是一种源自地中海的入侵物种天竺葵与它们的主食植物之间的竞争对大部分种群数量造成了影响。

Until the early 1980s , in optimum habitats Falcated Duck comprised c. 60-85% of the total waterfowl population.

直到 80年代早期，在适宜生境中罗纹鸭仍然占据大约 60-85%的水鸟种群数量。

Populations of this marine plant will grow or diminish rapidly in response to changes in its environment .

海洋浮游植物种群数量可因环境条件的变化而增长或下降。

The results showed that the populations of vegetable aphids in cabbage were in declining trend in the temporal sequence .

结果表明，甘蓝上菜蚜的种群数量在时间过程中均呈下降趋势；

The arguer assumes that UV radiation damage is the reason for the decline in the population but totally ignores all other possible reasons .

论述者假设紫外线的破坏是该种群数量下降的原因，但却完全忽略了所有其他各种可然性原因。

The line transect methods are widely used in wildlife population census .

样线法是野生动物种群数量调查的常用方法之一。

But even with less of its habitat being destroyed the spotted owl population has yet to bounce back .

不过，即使栖息地的破坏大量减少，斑点猫头鹰种群数量迄今并未恢复。

biocontrol bacterial treatment had less effect on actinomycetes populations in different soils samples.

生防细菌对土壤中放线菌的种群数量影响较小。

They used the number of those genetic differences between the two genomes to calculate how large the population was at that time .

他们根据两个基因组中的基因差异，计算远古时期的种群数量。

However , in southern Africa , where 58 percent of the elephant population resides , numbers are rising to problematic levels.

然而，生活着 58%的非洲象种群的南非，其种群数量已上升到形成问题的程度。

The relationship between the species, number of oribatid mites and the level of plumbum pollution was explored in this study .

对土壤中甲螨孳生的种群数量与土壤铅污染之间的相互关系进行探讨。

They are largely nomadic and whilst groups of up to 200 have been recorded , the average herd size is more like 14 .

它们主要是游牧生活，同一时期有记录的最大种群数量达到 200个，平均羊群成员在 14 头以上。

At the same time, scientists have discovered , the population of a species of salamander that lays its eggs in mountain lakes has declined .

同时，科学家们发现，一种在山间湖泊里产卵的物种 ——蝾螈 ——的种群数量已出现减少。

New information on population trends and comment on this species' status at the breeding and wintering grounds is welcomed .

欢迎关于罗纹鸭种群数量的新信息和在繁殖和越冬地状态的评论。

种群数量

种群数量

population

population quantity

population number

Population size

group size

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