植物群落各层次中占优势的植物。即在数量、体积和群落学作用上最为重要的物种。一般确定优势种所使用的指标主要是种的盖度和密度最大的种类,如兴安落叶松是大兴安岭落叶针叶林内乔木层的优势种,而我国典型草原的优势种则以旱生丛生禾草为优势种,如针茅属的大针茅、克氏针芒等
优势种(dominant species):对群落结构和群落环境的形成有明显控制作用的植物。他们通常是个体数量多、投影盖度大、生物量高、体积较大、生活能力较强,即...
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... dominant hemisphere 优势大脑半球... dominant species 优势种 dominant eigenvalue 主本征值 ...
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亚优势种 subdominant species ; subdominant ; subdominule
优势种群 dominant population
优势种与建群种 dominant species and constructive species
双重优势种 double dominant
暂时优势种 temporary dominant
杂种优势 [遗] Heterosis ; heterosis or hybrid vigor ; hybrid vigor heterosis
优势种区域 dominance area
恒存优势种 constant dominant
优势种比率 dominant ratio
Fraxinus mandshurica was the dominant species in one-year-old seedling.
水曲柳则为一年生幼苗中的优势种。
参考来源 - 小兴安岭阔叶红松林种子雨及幼苗更新Aims Dominant tree species control the structure and function of forest ecosystems. De-limiting plant functional types (PFTs) based on dominant tree species, therefore, can assist in under-standing the functional, structural framework and species distributions of an ecosystem.
乔木层优势种左右着森林生态系统的结构与功能,以乔木层优势种为主体划分森林生态系统功能型,可以对森林生态系统的功能、框架结构及类群分布有一个明确的认识。
参考来源 - 伏牛山自然保护区森林生态系统乔木植物功能型分类The two larger crustacean dominant species were also affected by fish significantly. Changes in zooplankton abundance and biomass were significant related to fish numbers and density.
桡足类的优势种以台湾温剑水蚤及其幼体为主,模糊秀体溞是唯一的枝角类优势种,这两种的丰度和生物量均明显地受到鱼类捕食的影响。
参考来源 - 白鲢和尼罗罗非鱼混养对热带水库浮游动物群落影响—大型围隔实验·2,447,543篇论文数据,部分数据来源于NoteExpress
尼罗罗非鱼(Oreochromis niloticus)是我国华南淡水中的优势种。
Oreochromis niloticus is the dominant species in freshwaters of South China.
蔬菜地共有12科15属17个种,优势种为金色狗尾草。
There are 12 families, 15genus, 17 species in the vegetable site and the advantage species is Setaria glauca.
尽管第一个长出木本的植物体积很小,但接下来的其他植物种群便能够因此迅速从木本结构优势种获利,仅仅几百万年的时间,其中一些具有木本的植物便进化得像现在的树一样了。
Although the first plants sporting wood were small, subsequent species quickly took advantage of wood's structural strength: in just a few million years, some had attained treelike stature.
That's one of the beauties of proteins as working molecules is that their structure can be changed by subtle means.
蛋白质作为一种生物活性分子,其优势之一是,能够通过精细的方法改变其结构
Can a good appearance be a competitive advantage?
较好的面容会成为一种竞争优势吗?
The traditional answer is that These guys actually did press up against the rows in front of them And that this provided a momentum That gave the front line an advantage in beating the enemy facing them.
传统的回答是,他们实际上是在推挤前面几排友军,为其提供一种动力,使前线在与对面的敌人交战时具有优势
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