多样性

The significance of the spatial variation in gene diversity among populations was estimated by per-forming a hierarchical analysis of genetic diversity among populations using the analysis of molecular variance model, as described in Michalakis and Excoffier (1996) and available in ARLEQUIN.

种间基因多样性空间变异的显著性用在分子变异模型上操作的种间遗传多样性层次分析来估计，如同Michalakis和Excoffier (1996)描述的，并且在 ARLEQUIN软件中也有效。

It is concluded from the cluster analysis that the diversity of arthropod community is mainly affected by the vegetation types in addition to environment factors.

通过聚类分析得出，对节肢动物群落多样性高低的影响因素中，植被类型的多样性对其影响最大，其次是环境因子。

The content of mineral elements in ripe fruits of M.sieversii from 78 seedings at Mohe Town,Gongliu Country were analyzed using Atomic Absorption Spectrophotometer.The results indicated that M.sieversii seedings presented considerable genetic variations in content of mineral elements with the range of variation coefficients from 24.2% to 54.0%.So it has large potential for further selection.Four elite seedlings were selected,namely large fruit type,high Ca content type,high Zn content type and high damascenone content.As the predominant component of Ily wild fruit tree forest,Malus sieversii had occupied an area of 9300ha.But the inherent reproduction system of M.sieversii and genetic diversity of the species were destructed in different degrees,as a result of farming assart,over grazing and damage by Agrilus mali.

上述结果支持"新疆野苹果可能是栽培苹果祖先种"的结论；②对巩留县莫舍乡的新疆野苹果78个实生株系果肉组织Ca、Mg、Fe、Zn、Cu、Mn6种矿质营养元素进行测定的结果表明，每种矿质元素含量单株间差异显著，变异系数在24.2％～54.0％，遗传多样性丰富，进一步选择的潜力很大；③根据新疆野苹果果实形态、香味物质和矿质元素含量等的测定结果，初步筛选出了大果型、高钙型、高锌型和大马酮型等4个特异性状单株；④调查发现，由于农田开垦、过度放牧以及苹果小吉丁虫的蔓延危害，目前伊犁野果林面积逐年减少，野苹果固有的繁育体系和遗传多样性受到不同程度的破坏。

Avian ; Avifauna ; Group diversity ; Species diversity ; Three Gorges Reservoir

鸟类；区系；类群多样性；物种多样性；三峡库区

Abundance index and other indicators of forest Mangdangshan Mountain Nature Reserve, and a comparative analysis of species diversity.

福建南平茫荡山与万木林森林群落物种多样性比较分析摘要本文以物种多样性指数、均匀度、丰富度指数等指标对茫荡山与万木林自然保护区的群落物种多样性进行比较分析。

Department of Ecology and Biodiversity is primarily dedicated to education and research in ecology and biodiversity including conservation biology, coral ecology, ecotoxicology, environmental microbiology, fungal biodiversity, mangrove ecology, microbiology, molecular ecology and evolution, molecular microbial ecology, molecular phylogenetics, plant pathology, plant systematics and evolution, plant-animal interactions, pollution biology, terrestrial ecology.

生态学和生物多样性学系创建于1994年，主要致力于生态学和生物多样性学的教学与研究，其研究领域包括保护生物学，珊瑚生态学，生态毒理学，环境微生物学，真菌生物多样性，红树林生态学，微生物学，分子生态学和进化，分子微生物生态学，分子系统发生学，植物病理学，植物分类学和进化，植物－动物相互关系，污染生物学，陆生生态学等。

The role of six types of urban plantations in Harbin in maintaining woody plant diversity was assessed quantitatively by sample plot survey and diversity index analysis.

采用样地网格调查方法与多样性指数分析方法，定量评价了哈尔滨城市人工林在维持木本植物多样性方面的作用，并通过分析林分更新层、演替层、主林层的多样性指数，探讨了城市人工林自然化过程及其近自然经营途径。

The gene-expressionprofile might help to further understand the molecular basis of tube worm physiology.It will also lay a good foundation for functional studies on the adaptation to extremeenvironments and help to make use of them. MicroRNAsare a class of small noncoding RNA that are 20-22nucleotidesand function as regulators of gene expression.

其中，几丁质结合蛋白最具多样性，不仅几丁质酶水解区和几丁质结合区相互独立，而且几丁质结合区也显示丰富的多样性，由不同的几丁质结合区共组成了23种不同的几丁质结合蛋白；EST测序分析中还发现两个溶菌酶基因带有双功能区，可能具有双重功能；此外，肌红蛋白基因也显示了序列的多样性。

In practice, it was impossible to obtain the detailed information of all species in a targeted area of BIA, so the species-level impact assessment should be addressed through the studies on the key objectives like the species which were protected and closed related to people or species of economic and cultural values, etc.

生态系统的影响程度用旅游规划实施影响后的生态系统多样性承载能力的损失量与旅游规划前的生态系统多样性承载能力的比值来衡量。5、物种影响评价首先根据生物多样性保护目标的要求，确定重点评价对象。

The intuitive meaning of the groups of diversities are analyzed and two kinds of significations of PD are unveiled.

提出了新的种群多样性度量方法及其定量计算公式，证明了它们之间的一个数量关系；分析了这几组多样性的直观意义，揭示了种群多样性的两种含义。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。