种群密度

[zhǒng qún mì dù]

Chinese-English

Web Definition

Sample Sentence

Definition:
AllAll,population densitypopulation density
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
1.
The research resultsshowedthat the population density of rodents fluctuated obviously among different years, but there was no periodicity.
研究结果表明，不同年间啮齿类种群密度波动明显，但无周期性；
yán jiū jié guǒ biǎo míng , bù tóng nián jiān niè chǐ lèi zhǒng qún mì dù bō dòng míng xiǎn , dàn wú zhōu qī xìng ;
www.cnak.net
2.
Three of the cases they studied found that the rise of West Nile virus in the U. S. corresponded to decreases in bird population density .
他们在研究过的三个案例中发现西尼罗河热在美国的的流行与鸟类种群密度的下降相关。
tā men zài yán jiū guò de sān gè àn lì zhōng fā xiàn xī ní luó hé rè zài měi guó de de liú xíng yǔ niǎo lèi zhǒng qún mì dù de xià jiàng xiāng guān 。
www.bing.com
3.
Secondly, the population density decreased with increasing of defoliation intensity, but the difference is not significantly.
其次，种群密度随着刈割强度增大而降低，但处理间的差异不显著；
qí cì , zhǒng qún mì dù suí zhe yì gē qiáng dù zēng dà ér jiàng dī , dàn chǔ lǐ jiān de chā yì bù xiǎn zhù ;
www.juhe8.com
4.
The first step was to use some very vigorous sampling-based methods to estimate population densities of herbivores .
第一步就是采用一些有效的取样方法估算食草动物的种群密度。
dì yī bù jiù shì cǎi yòng yì xiē yǒu xiào de qǔ yàng fāng fǎ gū suàn shí cǎo dòng wù de zhǒng qún mì dù 。
dictsearch.appspot.com
5.
With no natural enemies, their densities reached 10 to 100 times that of Argentina.
因为没有天敌，火蚁的种群密度达到阿根廷的十倍甚至百倍。
yīn wèi méi yǒu tiān dí , huǒ yǐ de zhǒng qún mì dù dá dào ā gēn tíng de shí bèi shèn zhì bǎi bèi 。
article.yeeyan.org
6.
Population density had no effects on the reproductive allocation, while plant size conditioned the allocation.
种群密度对沙米的繁殖分配无影响，其繁殖分配主要受个体大小的制约。
zhǒng qún mì dù duì shā mǐ de fán zhí fēn pèi wú yǐng xiǎng , qí fán zhí fēn pèi zhǔ yào shòu gè tǐ dà xiǎo de zhì yuē 。
www.ceps.com.tw
7.
For one thing, no population can be driven entirely by density-independent factors all the time.
一方面，没有任何种群在所有的时间里完全只受“种群密度无关”因素的影响。
yì fāng miàn , méi yǒu rèn hé zhǒng qún zài suǒ yǒu de shí jiān lǐ wán quán zhǐ shòu " zhǒng qún mì dù wú guān " yīn sù de yǐng xiǎng 。
blog.sina.com.cn
8.
These differences finally originate from they quite high population density, this has also reflected their habitat quite high food output.
这些差异最终来源于它们比较高的种群密度，这也反映了它们栖息地比较高的食物产量。
zhè xiē chā yì zuì zhōng lái yuán yú tā men bǐ jiào gāo de zhǒng qún mì dù , zhè yě fǎn yìng le tā men qī xī dì bǐ jiào gāo de shí wù chǎn liàng 。
www.taody.com
9.
Comparative study on clonal and sexual reproductive traits of Leymus chinensis populations in different habitats .
小獐毛种群密度和生物量与有性生殖特征的相关分析。
xiǎo zhāng máo zhǒng qún mì dù hé shēng wù liàng yǔ yǒu xìng shēng zhí tè zhēng de xiāng guān fēn xī 。
www.bing.com
10.
tabaci has distributed in most areas of Shandong province and the population density was characterized with regional disequilibrium.
调查结果表明：烟粉虱在山东省广泛分布，然而其种群密度在不同的地区具有区域不均衡性的特点。
diào chá jié guǒ biǎo míng : yān fěn shī zài shān dōng shěng guǎng fàn fēn bù , rán ér qí zhǒng qún mì dù zài bù tóng de dì qū jù yǒu qū yù bù jūn héng xìng de tè diǎn 。
www.dictall.com