生物多样性

The saline alkaline wetland is the result of saline alkalization of wetland, showing degeneration of entironment.

腰泡作为松嫩平原弱碱性湖泡湿地的典型之一，其生态系统具有生物多样性相对较好和食物链较短的优点，但动植物的数量关系反映出系统结构失调和功能受阻的缺陷。

Around all survey areas there were totally 8 dominant species in 4 seasons,which were Trichiurus japonicus,Pseudosciaena polyactis,Setipinna taty,Acropoma japonicum,Apogon lineatus,Engraulis japonicus,Champsodon capensis,Psenopsis anomala.

生物多样性指数中丰富度指数和Shannon-Wiener多样度指数变化趋势一致，在春、夏两季3个区域相差不大，而在秋、冬两季黄海南部与东海北部和中部有明显分异；种类均匀度指数在四季节3个区域之间相差不大。

Because divergence timing of the West Clade from the East Clade of S. japonica complex was estimated to be Aquitanian of Miocene (23 Ma), during which the mountains and plateau of Southwest China were formatted, the divergence of the West Clade from the East Clade of s. japonica complex was presumably correlated closely with the uplifting of mountains and plateau of Southwest China. The multiple variations of the West Clade of S.

西部集群居群间具有更大的遗传分化值和更大的遗传分化值变动范围，提示西部物理环境的复杂性导致更多的小区域隔离，小的基因流和更大的绝对成种速率，这与西部的物理环境的复杂性是相协调的，并且可能是造成西部山地高原地区生物多样性异常丰富的微观过程和机制。

It not only arains natural resources day by day and decreases the biological diversity,but also seriously prevents the Loess platean's area econnomy from developing continuingly,then threatens the local people's living and development,thus,the study and governing of biological degeneration should be regarded seriously.

中文摘要：摘要：生态退化是目前黄土高原所面临的主要环境问题，它不仅使自然资源日益枯竭、生物多样性不断减少，而且还严重阻碍黄土高原地区经济的持续发展，进而威胁当地人民的生存和发展，因此，对生态退化的研究和治理应给予万分的重视。

Been long-term protected by local people, a stable heron community has been formed at Wanheshan either, it includes 10 species of Ardeidae, among them 7 species nested together to form a large "heron woods", it is of high value in scientific research.

因此，该保护区在生物多样性保护中具有重要作用。亦是经过当地群众长期自发保护，在防城区万鹤山亦形成了一个稳定的鹭鸟群落，保护区内现有鹭科鸟类10种，其中7种鹭鸟聚集在万鹤山小范围内营群巢，成为大型复杂的鹭林，具有极高的科学研究价值。

First of all, according to analysis the effect of ecosystem during the water cycle, the type of ecological water demand in wetland was clarified which is an azonal ecological system supported by the runoff with the feature of azonal.

通过分析湿地水文循环的生态效应，湿地是由径流支撑的非地带性生态系统，具有泛区域特点，湿地生态需水须要在研究湿地径流场与生物多样性变化基础上进行。

Oasis is one kind of azonal landscape developed under dry climate condition and surrounded by desert at small or medium scale, in which mesophytes or xero_mesophytes plants with relatively high primary productivity supported by runoff grows.

其具有径流依赖性、景观隐域性、演替双向性、分布边缘性、发展阶段性、空间分散性、易变性与基质的高反差性等特点；而人〓绿洲尚有儿何形状规则、生物多样性低、经济封闭等特点。

The BRG encompasses a broad range of biogeographical content focussing upon the study of plant and animal distributions and their geographical relationships with the environment. This includes aspects of ecology, biodiversity, landscape ecology, palaeoecology, environmental resource management, and includes human-environment relations.

该研究组致力于动物、植物地理分布以及它们与环境的地理关系的研究工作，涉及的学科范围包括生态学、生物多样性、景观生态学、古生物学、环境资源管理、人与环境关系。

A survey was conducted to study the biodiversity and seasonal change of insects in four plant communities, Calamagrostis angustfolia, Salix brachypoda-Calamagrostis angustifolia, Carex pseudocuraica, Carex casiocaepa, in a typical annular wetland in Sanjiang Plain by the methods of yellow-pan trap and net-sweeping.

以三江平原典型环形湿地为研究对象，在小叶章群落、沼柳小叶章群落、漂筏苔草群落、塔头毛苔草群落，采用黄盘诱集法和扫网法定期对湿地昆虫群落进行采集，研究了该区内的昆虫生物多样性及其季节性变化特征。

Chagan Lake Nature Reserve upgraded to the National Nature Reserve in 2006,it has played an important role in the protection of regional biodiversity, regulating floods, water conservation and so on.

查干湖自然保护区在2006年升级为国家自然保护区，该保护区在保护区域生物多样性、调节洪水、涵养水源方面起到重要作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。