查询词典 diversity factor

3The study on the diversity of soil microbial community of Pinus bunging Zucc.et Endl 20 diferent microbial community in the soil were analyzed and compared by species richness index,diversity index and evenness index.The result showed that Species Composition,Quantity Variation and Bio-diversities ect.of soil microbial community differed.

3白皮松土壤微生物群落多样性研究运用丰富度指数、均匀度指数和多样性指数对不同生境的土壤微生物进行分析比较，结果表明，分布在20个样地的微生物各自组成了相应的群落，群落内属的种类、数量组成、多样性、均匀性等都是不同的。

Furthermore, there was no change in the diversity of ammonia-oxidizing bacteria in the soil determined on the basis of the appearance of amoA gene diversity in denaturing gradient gel electrophoresis.

此外，没有任何变化，在不同的氨氧化细菌在土壤中的基础上确定的外观amoA基因的多样性变性梯度凝胶电泳

Different DNA isolation methods can affect the diversity analysis of the microbiota due to their different lysing efficiency, bead beating is more appropriate for DNA extraction from fecal samples because it can give higher DNA yield and recover more diversity.

比较其他2种方法，Bead beating的裂解效率更高，能够检测到更多种类的细菌，更合适肠道菌群组成的分子研究。

Further studies on biodiversity in the reforested land showed that shrub diversity increased but herb diversity decreased with reforested time. The evenness index changed little.

该流域人工林恢复结果表明，林龄的增加，土壤性质变化比较大，总氮含量与种植年龄呈现十分好的线性正相关，土壤质量也有较大的改善。

They could result from experimental variations in, for example, the diversity of the Tat peptide sequence used to promote the translocating activity, the wide variety of cell lines studied, the differing protocols applied to investigate the entry mechanism or the high diversity of cargoes, all of which might well influence the behavior of the Tat peptide during the cellular entry process.

其原因主要是由于实验的差异所引起的。例如：用于促进转运活性的Tat多肽序列的多样性、所研究细胞的种类各不相同、研究细胞进入机制所用操作方法的变动或使用了不同的载体，所有的这些因素都可能在细胞进入的过程中影响Tat多肽的行为。

They could result from experimental variations in, for example, the diversity of the Tat peptide sequence used to promote the translocating activity, the wide variety of cell lines studied, the differing protocols applied to investigate the entry mechanism or the high diversity of cargoes, all of which might well influence the behavior of the Tat peptide during the cellular entry process.

用于促进转运活性的 Tat多肽序列的多样性、所研究细胞的种类各不相同、研究细胞进入机制所用操作方法的变动或使用了不同的载体，所有的这些因素都可能在细胞进入的过程中影响 Tat 多肽的行为。

The individual density was 4.77 inds. per gram dry soil. The results indicated that the number of soil nematode fluctuated significantly with season, the number of soil nematode in autumn is significantly more than that in summer and in spring. Shannon-Wiener index, Pielou index, Margalef index and Trophic diversity index were used in analyzing the diversity of nematode community, ranking Cc＞Pm＞Clc, while Simpson index ranking Pm＞Clc＞Cc. The value of f/b, MI index, PPI index, MMI index, MI2-5 index, SI index and EI index were used in analyzing the characteristics of the functional structure of the nematode communities, ranking Cc＞Pm＞Clc, while PPI/MI value ranking Clc＞Pm＞Cc. It showed that the Clc was disturbed significantly.

研究结果表明，土壤线虫数量存在明显的季节波动，秋季明显高于夏季和春季；土壤线虫群落多样性指数、均匀度指数、丰富度指数和营养类群指数大小依次为阔叶林、针叶林和混交林，而优势度指数却表现为：针叶林＞混交林＞阔叶林；土壤线虫群落营养类群f/b值、MI 指数、PPI 指数、MMI指数、MI2-5指数、SI指数和EI指数均表现为：阔叶林＞针叶林＞混交林，而PPI/MI指数则表现为：混交林＞针叶林＞阔叶林，表明混交林受干扰明显；土壤理化特征与线虫数量、属数、生态指数间也存在明显相关关系。

Species diversity should acturally be the biological diversity of species.

物种多样性研究的实质是研究生物物种的生物学多样性。

This text commences from the research of biology diversity in the wetland, its research works include following aspects:First, the diversity of plant and bird in wetland was studied in a systemic way.

从生物资源、自然景观资源、人文资源和环境资源等方面对生态旅游资源进行了综合评价。提出了湿地生态旅游的环境保护规划原理，并制定了具体的保护方案。

The results show that as the crown density reduces the foresttype diversity increases and as the diversity goes up the stability of stand comes down; that the forest is under regressive succession and its stability now is the lowest; that the growth of spruce and fir trees has obviously a n...

结果表明：该林区的林分类型多样性随郁闭度的降低而增加，林分的稳定性随多样性的增加而降低，林分处于逆向演替过程中，林分的稳定性处于最低限；云、冷杉林与环境因子——海拔之间呈明显的负相关；在高海拔区云、冷彬林十分脆弱，一旦原有种群结构的郁闭度低于0.3，森林的稳定性将被破坏，即使在完全封禁的条件下，25年生的疏林要恢复到有林地状态，需要40年的时间。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。