diatom ['daiətəm]

diatom的基本解释

n.

矽藻类

diatom所属的单词分类

Animal / 动物 [799]

woolly rhinoceros  ·  woolly mammoth  ·  woolly bear caterpillar  ·  wild cat  ·  western meadowlark  ·  Umbrellabird  ·  Treefrog  ·  thresher shark  ·  Swallowtail Butterfly  ·  spiny lizard

与diatom相关的网络例句 [注：此内容来源于网络，仅供参考]

Based on above studies, some main conclusions were obtained as follows : 1 the diatoms forming mats in low latitude west pacific is"shade flora"diatom Ethmodiscus rex Hendey; 2 the sites found diatom mats are zone distributed, the direction is NW-SE and most distribute in the deep water area with flat seafloor, between 17°N～20°N and the water depth 4837-6150 m below Carbonate Compensation Depth (CCD 3) AMS 14C dates show that the sediments rich in diatom mats occurred during 16.0 ~ 28.6 ka B.P., which means the bloom mainly occurred in last glacial maximum, while there are not diatom mats deposits in other layers; 4 A total of 101 diatom taxa belonging to 40 genera had been identified from the 155 samples in the two cores WPD 03 and WPD 12, and the relative percentage of Thalassionema frauenfeldii are the highest, Thalassionema nitzschioides、Azpeitia nodulifera、Hemidiscus cuneiformis、Nitzschia marina take the second place.

14C年期间，即&勃发&发生于末次冰期最盛期；4在WPD 03和WPD 12两个岩芯共155个样品中共鉴定硅藻40属101种，且Thalassionema frauenfeldii的相对百分含量最高，Thalassionema nitzschioides、Azpeitia nodulifera、Nitzschia marina、Hemidiscus cuneiformis等次之，这五种硅藻占整个硅藻物种相对百分含量的85%左右，说明在该海域表层水体硅藻席沉积过程中，这五种硅藻最容易与成席硅藻在同时期的环境中生存，形成勃发；5MIS3期的晚期，该区域表层海水盐度降低，这有助于该区水体的成层化，从而使&树荫种&硅藻开始勃发，导致&秋季倾泻&；6末次冰期由于南极中层水北扩，南大洋中层水将富含硅酸盐的海水带入了研究区，即南大洋的&硅溢漏&作用，使该区域硅藻得以勃发，同时，铁输入的增多，可能也是造成硅藻勃发的主要原因之一。

From 6860 to 3170 cal.yr BP,semi-desert steppeexpanded,regional montane forest steppe retreated,suggesting a prolonged warm and dryclimate.Between 3170 and 2340 cal.yr BP,regional forest steppe expanded whereassemi-desert steppe retreated,indicating the climate became cool and wet gradually and thehumidity reached the maximum at the end of this stage.During 2340～1600 cal.yr BP,Poaceae steppe dominated whereas wetland meadow expanded and the montane forest stepperetreated,suggesting a cool and wet climate prevailed,wormwood grass steppe prevailed andthe climatic instability increased after 1600 cal.a BEThe climate and environmental reconstructions by pollen were supported by the diatomrecords.A relative high lake level and moister climate prevailed between 8660 and 7230 cal.yr BP as inferred by the dominance of planktonic diatom genera and high planktonic/benthicratio (〉40).low lake level and dry climate sustained during 7230～2330 cal.yr BP assuggested by the low abundance of planktonic diatom and low planktonic/benthic ratio ～20and the lake returned to high level during 2330～930 cal.yr BP as inferred by there-dominance of the planktonic diatom and the high value of palnktonic/benthic ratio.The pollen-based climate reconstruction was also consolidated by the grain size andPediastrum concentration records.

Ugii Nuur湖周围现代孢粉研究表明：松属为空气传播的外来花粉，其含量变化可能指示了远山森林草原发育状况；禾本科具显著低代表性，母体植物建群时含量通常在10％以下：藜科花粉含量可以指示区域气候干旱程度。2、以现代孢粉研究为基础、可靠AMS~(14)C年代为框架，Ugii Nuur孢粉记录高分辨率地重建了蒙古国中部地区过去8660 cal.yr BP以来的植被和气候变化。8660～7800 cal.yr BP研究区植被为禾草草原，湖畔及河谷低地发育苔草草甸，远山发育松属针叶林和森林草原，气候温和略湿润；其中8350～8250 cal.yr BP湿生草甸扩张，旱生植物成分减少，气候凉湿。7800～6860 cal.yr BP旱生成分增加，气候转向暖干。6860～3170 cal.yrBP半荒漠草原扩张，远山森林草原退缩，山地草原和河谷及湖畔湿生草甸退缩，气候持续暖干。3170～2340 cal.yr BP半荒漠草原退缩，远山森林草原扩张，气候转凉变湿，末期湿度条件达最佳。2340～1600 cal.yr BP禾草草原发育，湖畔及河谷低地湿生草甸扩张，远山森林草原略有退缩，气候总体较凉湿。1600 cal.yr BP以来研究区发育禾草-冷蒿草原，气候波动较大。

There is a good correlation between diatom and kast cave environment, so make use of diatom as an indicator for the evaluation and monitoring of karst cave environment will be of important scientific research value, theoretical and actual significance.

硅藻与喀斯特洞穴环境具有很好的相关性，将硅藻作为喀斯特洞穴环境评价与监测的指示生物，具有重要的科学研究价值和理论现实意义。

与diatom相关的网络解释 [注：此内容来源于网络，仅供参考]

diatom：硅藻

Summary: 根据美国俄勒冈州立大学和波特兰州立大学的研究人员们实验证实,一种名为'硅藻'(diatom)的微小海藻有助于使染料敏化太阳能电池(dye-sensitized solar cell)的电力输出提高三倍. 一种名为'硅藻'(diatom)的微小海藻有助于使染料敏化太阳能电池的输出效率提高三倍.

diatom：硅藻类

由含有二氧化硅的浮游生物残骸组成,如硅藻类(diatom)及放射虫类(radiolaria). 硅质软泥主要分布于高生产力的海区,如两极海域及近赤道(北太平洋)的上升流(upwelling)海域,其沉积速率约为0.2-1cm/ka,明显低于钙质软泥,

diatom：硅藻属

diathesis 素质 | diatom 硅藻属 | diatomaceous 硅藻的

diatom：道线

Diaphragm wall 地下连续壁 | Diatom 道线 | Diesel Fuel 柴油

diatom ooze：硅藻软泥

diatom earth 硅藻土 | diatom ooze 硅藻软泥 | diatom 硅藻