查询词典 habitats

Compared to that in crops,gene introduction in trees has bigger potential ecological risk in environmental release and extension,because trees,most of which are wind-dispersed,grow on various habitats,have longer life span,and subject to relatively more extensive management.

由于林木栽培环境复杂、生产周期长、经营管理粗放，且主要为风媒传粉植物等原因，与集约化程度较高的农作物相比，转基因林木环境释放及推广的潜在生态风险性更大。

With plentiful food sources and well-hidden habitats, Guandu Nature Park acts as a rest stop for thousands of migratory birds each spring and autumn. There are times when this park hosts more than 220 different species of birds.

关渡自然公园提供了丰富的食物来源与隐密性高的栖息地，成了许多候鸟每年春、秋季过境时的停靠站，有时甚至有超过两百二十种以上的鸟类到这里作客。

Objective To study the genetic diversity of rDNA ITS sequences in the root tuber of Polygonum multiflorum from various habitats and to analyze the utility of ITS sequences in molecular authenticating the genuineness, identifying the varieties of wild resources, and studying the germplasm resources.

目的 研究不同产地何首乌的ITS片段遗传差异性，分析该片段在何首乌道地性的DNA分子鉴别和野生资源品种的鉴定及种质资源研究中的意义。

Methods Firstly, total DNA in the root tuber of P. multiflorum from various habitats was extracted. Secondly, the ITS sequence was amplified by PCR with universal primer of ITS and sequenced after purification.

从来自不同原产地的何首乌中提取总DNA，以核基因组ITS通用引物为引物进行扩增，扩增产物经纯化后，用PCR产物直接测序法进行测序。

And hundreds of acres of deciduous, evergreen, swamp, and mangrove forests, Belize is among the richest habitats on Earth, supporting wildlife such as

在伯利兹的Sittee河，一条鬣蜥泰然自若的从一角落跃起，睁着大眼睛注视着照相机。

Plants from varying altitudes and habitats, usually much larger (0.3–2 m), smaller specimens slender-stemmed.

变化高度和生境，非常大(0.3-2米)，小标本纤细茎的通常的植株。

From analyzing Shannon index in five different types of habitats, we discovered transect of crab ponds with reed behind the sea wall(artificial and half-aitificial wetlands) had the highest Shannon index, The results show that this type of habitat is very important to wintering waterfowls. The artificial and half-artificial wetlands are belong to trial regions within the sea wall, Now the situation of waterfowls in Chongming Dongtan is very dangerous .

目前对崇明东滩自然保护区的现状不容乐观，堤内的人工半人工湿地被划入实验区，崇明东滩不断进行的围垦活动，各种各样的地方人为干扰活动(偷猎鸟类、捕捉鳗苗、放牧、放火烧荒等等)都严重影响水鸟的生存状况，加之保护区经费短缺，人员不足，使得崇明东滩鸟类的生存环境不断恶化，严重影响了湿地鸟类的生存和栖息地质量。

It may also cover the cost of a plan to create "green corridors" between tiger habitats, allowing the cats to cross-fertilise their isolated gene pools.

这笔资金或许也会负担在老虎栖息地之间建造&绿色走廊&这一计划所需之费用，这将使老虎交叉受精于独立的基因库之中。

In recent years, the intervention of some human activities and the deterioration of nature environment, that has sharpened the Asian elephant's natural habitats.

近年来，由于诸多人为活动的干预和自然环境条件的恶化，激化了野象的生境危机。

Hot springs are widely hosted in igneous, metamorphic and sedimentary rocks in Taiwan. These diverse natural habitats for thermophilic microorganisms are ideal studying sites to understanding the interaction between microbial communities and geochemical circumstance in various geological regions.

台湾地区无论在火成岩、变质岩或沉积岩地区均有温泉出露，可提供嗜热微生物多样化的天然居所，是了解热泉微生物族群变化与地质地化特性的关系，与讨论不同区域中微生物代谢策略差异之好题材。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。