多样性

Results indicate that the number of bacteria grown in media LB, CSEA and WSA was 14.84×10^7, 10.27×10^7 and 6.91×10^7 CFU per gram dry soil, respectively, after 192 h of incubation. The diversity index of soil bacteria was the highest in WSA, while the lowest in LB. Certain similarity was discovered in bacteria community between the three media, i. e. the Jaccard index was 57.69% between LB and CSEA, 53.13% between LB and WSA and 66.67% between CSEA and WSA. Phylogenetic analysis suggests that the dominant bacterial groups in the soil belong to β-Proteobacteria,γ-Proteobacteria and Actinobacteria. The sequence of 16S rDNA of some OTUs was found to have high homology with Burkholderiaceae bacterium, Rhodococcus and Mycobacterium, so it is presumed that the cells of these bacteria can secrete Resuscitation-Promoting Factors, which may effectively improve culturability of soil microorganisms.

结果表明，LB、CSEA、WSA培养基192h后每g干土获得的细菌数量分别为14.84×10^7、10.27×10^7和6.91×10^7CFU，但微生物多样性指数以WSA为最高，LB多样性指数最低；三种培养基培养的细菌菌群有一定的相似性，LB和CSEA培养基间的Jaccard指数为57.69%，LB和WSA培养基之间为53.13%，而CSEA和WSA培养基的相似性指数达66.67%；16SrDNA测序结果表明，所获得的土壤细菌优势种群在分类方面主要属于γ-和β-变形杆菌以及放线菌亚门，其中某些OTUs中的16SrDNA序列与Burkholderiaceae bacterium、Rhodococcus和Mycobacterium属具有较高的同源性，推测其细胞能够分泌复苏促进因子，有效地提高土壤细菌的可培养性。

This is corresponding to huge population size and extensive distribution of Pelohylax nigromaculata throughout Palaearctic and Oriental Regions.

这样高的单元型多样性和核苷酸多样性与黑斑侧褶蛙作为古北界和东洋界的广布种，种群大是相应的。

The high haplotype diversity and nucleotide diversity were corresponding to very large population size and extensive distribution of Pelophylax nigromaculata in Palaearctic Region and Oriental Region.

这样高的单元型多样性和核苷酸多样性与黑斑侧褶蛙作为古北界和东洋界的广布种，种群大是相应的。

The average taxonomic distinctness Δ+ was the highest in the southern Yellow Sea and lowest in the central Yellow Sea; the spatial variations were largely caused by the different spatial distributions of species belonging to orders Perciformes, Pleuronectiformes, Clupeiformes and Scorpaeniformes, especially those of cartilaginous species.

在区域尺度上，分类多样性指数Δ，分类差异指数Δ+在黄海中、北部较高，南黄海较低；等级多样性指数Δ+为南黄海最高，中黄海最低，其区域尺度变化主要是由鲈形目、鲽形目、鲱形目和形目种类，特别是软骨鱼类的种类数的分布变化造成的。

The phenotypic variation coefficients of most of the traits decreased with the advances of generation of selection.

群体内的遗传多样性大于群体间的遗传多样性，且群体内的遗传差异随着选择的增加呈下降趋势。

Bacterial diversity of sediment in shrimp pond was analyzed by using PCR-DGGE technique, the Shannon-wiener index is 3.4971, the Richness is 41 and the Evenness is 0.94171; 17 dominant bands were excised from DGGE profile of surface sediment bacteria in shrimp pond and the V3 region of 16S rRNA gene was cloned and sequenced followed by phylogenetical analysis.

对虾池表层沉积物细菌多样性进行分析，得出该沉积环境细菌多样性指数为3.4971，丰度为41，均匀度指数为0.94171；对DGGE图谱上的特征条带进行切割回收和克隆测序后得到了优势菌的信息。

Increase of phytophagous diversity leads to more parallel connections and enhances the control feedback of the system. Complexity of parallel connection structure can turn to stability,whereas series connection can not.

通过研究认为，群落中并联形式的多样性可增加系统的冗余和负反馈作用，导致系统的稳定性；而串联形式的多样性不能导致系统的稳定性。

Some insects neither phytophagous nor natural enemies can also play a role to certain degree. Diversity at the increase phase is the biggest, and if it is big enough,outbreaks of pine caterpillars can be suppressed,otherwise the outbreaks can occur.

松毛虫不同发生阶段中，上升阶段多样性最大，如此时多样性足够大，可有效地抑制松毛虫的暴发，否则松毛虫将在竞争中占优势地位，数量猛增，导致大发生。

Farm. In the past (until app. 25 years ago) pistachiodiversity was maintained high in the field through a number of cultivation practices, s.a. use of male varieties derived from seed, use of wild Pistacia species to boost pollination and hence the fruit setting, use of natural populations of wild Pistacia (P. atlantica) as rootstock due to their well known resistance to stony and calcareous soils.

最近在农场栽培无花果技术的改变更加导致作物的多样性减少。25年前，无花果多样性通过多种栽培保持在很高的水平（源于种子的雄性物种采用，野生开心果物种改善授粉的采用，自然野生开心果作为根茎的采用——因为他们已知很好的抵抗多石和石灰性土壤的能力，等等

With the passage of time, species numbers of polychaeta increased (from 3 to 6) while species numbers and abundance of macrobenthos increased. A new pattern of macrobenthos was formed.

互花米草盐沼发育初期，大型底栖动物群落以腹足类为主，丰度和多样性较低，物种丰富度(d=2.18)和多样性(H′=2.19)均低于芦苇盐沼(d=2.61，H′=2.29)。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！