查询词典 species diversity

The phytoplankton biomass altered from 4.22 mg/L to 22.31 mg/L, averaging 12.29 mg/L. The diversity index of the phytoplankton (H =0.96) was relatively low. The zooplankton identified belongs to 19 species, and its biomass ranged from 3.75mg/L to 7.74mg/L, averaging 5.93mg/L. The diversity index of the zooplankton was relatively low too. In the cultured rice fields, the phytoplankton identified belonging 53 gena, 6 phyla.

在网箱养鳝塘中，共检出浮游植物40属，隶属于7个门；浮游植物生物量变化在4.22mg/L-22.3mg/L之间，平均为12.29mg/L；浮游植物的多样性指数相对较低(H=0.96)；共检出浮游动物19属，其生物量变化在3.75mg/L-7.74mg/L之间，平均为5.93mg/L；浮游动物的多样性指数(0.80)也相对较低。

Main conclusions Vegetation composition, diversity and structure all showed significant correlations with the diversity and species composition of geometrid moth assemblages.

结果显示尺蛾物种的多样性与样区内常见植物的科内物种多样性有关(R2 = 0.49)，且与植物结构指数有关(R2 = 0.22)，但与整体的植物多样性无显著相关。

Some paleontologists are calling this more fundamental diversity of ground plan "disparity" to distinguish it from the ordinary diversity of species.

一些古生物学着认为物种设计方案的不同是更重要的本质的不同，以此来与此前那种普通的物种数量上的多样性做区别。

The northern slope of Changbai Mountain where there is not only a high diversity in vegetation types and species, but also high variation of diversity pattern along the altitude gradient.

不同物种沿海拔梯度的连续或间断分布，不仅反映了环境随海拔的变化规律，同时也反映了物种的生物学、生态学特性、分布状况及对环境的适应性。

Using the DG index to measure the diversity of soil invertebrate assemblages was more reasonable than Shannon-Wiener Diversity Index in this case because the Acarina predominated in the samples which covered up the information of other soil invertebrate taxa, while the DG index is proposed on base of the hypothesis that every species has equal independence and importance in the community and could be compared with inter-community.

在本研究中，应用密度类群指数分析土壤无脊椎动物多样性的结果比应用Shannon-Wiener多样性指数的结果更为理想，这是因为土壤无脊椎动物由于组成结构复杂，不同类群的个体数量往往存在着巨大的差异，例如蜱螨目的较大数量常掩盖了其它类群的重要信息，多样性指数不能体现这一情况，而密度类群指数是基于各物种在群落中都有同等独立性，宜在不同群落间进行同种类比较的假设，对于复杂的土壤节肢动物群落多样性的测定可获得比较贴切的结果。

At present, the difficulty in sustaining language diversity focuses on the energy-decaying languages, so how to research amort languages of different degrees with wider eyeshots is not only useful for sustaining language species but also of great contribution to culture diversity.

目前，保持语言种类多样性的难点，更多地集中在那些语言活力开始衰退的语种上，如何以更广阔的视野对程度不同的濒危语言进行研究，不仅有利于语言种类的保持，也是对文化多样性的贡献。

Random amplified polymorphic DNA markers were used to measure genetic diversity and genetic structure of 3 natural populations of Carya dabieshanensis 238 loci were identified by 20 RAPD primers, out of which 162 loci were polymorphic and accounted for 68.1% of the total genetic diversity at species level.

利用RAPD分子标记技术检测了大别山山核桃3个天然居群的遗传多样性和遗传结构。20条10bp随机引物共检测到238个扩增位点，其中多态性位点162个，多态位点百分率为68.1%。

Random amplified polymorphic DNA markers were used to measure genetic diversity and genetic structure of 150 individuals from 5 natural populations of Carya cathayensis. 252 loci were identified from 20 RAPD primers, out of which 168 loci were polymorphic and accounted for 66.7% of the total genetic diversity at species level.

利用随机扩增多态性DNA分子标记技术，分析了山核桃5个天然居群150个个体的遗传多样性和遗传结构，20条10bp的随机引物共扩增出252个位点，其中，多态性位点168个，多态位点百分率为66.7%。

Random amplified polymorphic DNA markers were used to measure genetic diversity and genetic structure of 3 natural populations of Carya dabieshanensis .238 loci were identified by 20 RAPD primers,out of which 162 loci were polymorphic and accounted for 68.1% of the total genetic diversity at species level.

摘 要：利用RAPD分子标记技术检测了大别山山核桃3个天然居群的遗传多样性和遗传结构。20条10bp随机引物共检测到238个扩增位点，其中多态性位点162个，多态位点百分率为68.1 %。

Plant species richness and plant functional diversity have a positive influence on overall catabolic activity and catabolic diversity of soil bacterial community.

植物种丰度和植物功能多样性对土壤细菌群落的代谢活性和代谢多样性有成正比的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。