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北方针叶林
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  “北方针叶林”译为未确定词的双语例句
     The north of zhungeer is the main district of Central Asia desert mammal population and the mammal in Altai is north subfrigid zone coniferous forest pattern.
     摘要准噶尔盆地北沿与阿尔泰山地的兽类,山区以北方针叶林型动物群为主,平原以中亚荒漠型动物群居多,广布种掺杂其间。
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     World Forest Ecosystem includes tropical, subtropical, temperate, and boreal forests as well as other woodland.
     世界森林生态系统包括热带、亚热带、温带森林,北方针叶林以及其他有林地。
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  相似匹配句对
     Silent North
     无声的北方
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     The Solo Island Northern
     北方的孤岛
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     (3)Zone of coniferous forest(2500─3400m)。
     (3)针叶林带;
短句来源
     The Chinese zokor is the most important harmful rat for the conifer ou s treelet in hilly and mountain areas of north China.
     中华鼢鼠是我国北方地区丘陵山区针叶林幼树最重要的害鼠。
短句来源
     World Forest Ecosystem includes tropical, subtropical, temperate, and boreal forests as well as other woodland.
     世界森林生态系统包括热带、亚热带、温带森林,北方针叶林以及其他有林地。
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  boreal forest
The State of the Mammal Community of Boreal Forest Ecosystems in the Vicinity of a Nickel-Smelting Plant
      
The effect of industrial air pollution on natural small mammal populations has been studied in the northern taiga subzone of the boreal forest zone.
      
For wood chips from the boreal forest, a biomass source with a relatively high yield per gross hectare, a plant processing 14-38 M dry t/yr produces ethanol at a 13% reduction in cost compared with a plant producing 2 M dry t/yr supplied by truck.
      
For transport by dedicated unit train with an optimum number of terminals, the minimum economic rail shipping distance for straw is 170 km, and for boreal forest harvest residue wood chips is 145 km.
      
The ELA consists of 46 lakes (>amp;lt; 100 ha in surface area), their watersheds, and several streams protected for research purposes in near-pristine boreal forest on the Precambrian Shield near Kenora, Ontario.
      
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  boreal coniferous forest
Taiga (boreal coniferous forest) with Picea obovata established afterwards but was displaced at ca.
      
This paper summarizes our recent studies on the microbial communities of boreal coniferous forest humus exposed to Cd-containing wood ash treatment.
      
Effects of disturbance and size structure on the regeneration process in a sub-boreal coniferous forest, northern Japan
      
The stand structure and disturbance history in a sub-boreal coniferous forest dominated byPicea jezoensis, Picea glehnii andAbies sachalinensis were investigated in four study plots set up in Taisetsuzan National Park, Japan.
      
Sulfur speciation and distribution in soils and aboveground biomass of a boreal coniferous forest
      
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The north of zhungeer is the main district of Central Asia desert mammal population and the mammal in Altai is north subfrigid zone coniferous forest pattern. The mammal being in general distributing widely between zhungeer and Altai,from Zhungeer to Altai two districts just locate joinline of Siberia and central Asia, mammal here is so varinus with kind and type the fauna is complicate also. In recentyears, the giant mammal reduce clearly in Zhungeer and Altai districts, only the middle and little size as...

The north of zhungeer is the main district of Central Asia desert mammal population and the mammal in Altai is north subfrigid zone coniferous forest pattern. The mammal being in general distributing widely between zhungeer and Altai,from Zhungeer to Altai two districts just locate joinline of Siberia and central Asia, mammal here is so varinus with kind and type the fauna is complicate also. In recentyears, the giant mammal reduce clearly in Zhungeer and Altai districts, only the middle and little size as stable as usual, therefore, we ought to find out a new way to manage and todevelop the mammal resource.

摘要准噶尔盆地北沿与阿尔泰山地的兽类,山区以北方针叶林型动物群为主,平原以中亚荒漠型动物群居多,广布种掺杂其间。由于该地位处西伯利亚与中亚的交汇处,种类繁多,区系混杂。近几十年来,许多大型兽类的数量明显减少,只中小型兽类的数量较稳定。在资源开发利用上,应该进行重新评价。

The environmental changes in eastern China have been distinct for the past 10,000 years B.P., which are mainly shown as follows:

最近一万年来,我国东部自然环境演变十分明显,主要表现为:10500—9000a.B.P.气温、海面快速回升、沟谷加快填平、冰川萎缩、冻土北移或上移、森林扩展、阔叶树增多;9000—6000a.B.P.高温高海面及6000—4000a.B.P.最宜环境中,出现新高温期与新冰期交替,亚热带常绿阔叶林扩展与减缩。北方针叶林北撤与南侵、喜暖的微体古生物—有孔虫化石富集与缺失,降水丰歉、泥炭发育与停止等一系列变化;4000a.B.P.以来,这是气温与海面趋向下降的环境,气候变温干,常绿阔叶树减少,海面降低引起河口外移,沟谷重新受切割,地面冲刷,堆积次生黄土,气候波动频率加快,变幅减弱,环境变差。

The pollen analytical investigation of 226.07 m,deep QH70 core from Fulaerji district in the city of Qiqihar,Heilongjiang province have been carried out.Based on the characteristics of QH70 core sporo-pollen assemblages,seven pollen zones may be subdlvided in the order as follows:The first zone(Ⅰ)belongs to early period of the Late Cretaceous.When the flora was mainly composed of gymnosperm,the next was fern and a little original angisperm.Here the climate was hot and wet and the vegetation showed tropical-subtropical...

The pollen analytical investigation of 226.07 m,deep QH70 core from Fulaerji district in the city of Qiqihar,Heilongjiang province have been carried out.Based on the characteristics of QH70 core sporo-pollen assemblages,seven pollen zones may be subdlvided in the order as follows:The first zone(Ⅰ)belongs to early period of the Late Cretaceous.When the flora was mainly composed of gymnosperm,the next was fern and a little original angisperm.Here the climate was hot and wet and the vegetation showed tropical-subtropical in aspects.In this core the author didn't find the Palaeogene flora.The Ⅱ-Ⅲ zones belonging to the Late Tertiary are characterized by predominance of arboreal pollens,mainly consisting of Amenti- ferae and some conifers.The flora of the Neogene was mainly composed of Pinus,Betula, Castanea,Ulmus,Corylus,Alnus,Juglans,Quercus,Carya,Fagus,Tsuga etc.some subtropical species of Hamamelis,Liquidambar,Castanopsis,Melia.Myrica and Taxodiaceae which still ex- isted.The climate was warm and humid with the annual temperature higher than that of the present.As to the last period of the third zone(Ⅲ)the assemblage of herbaceous plants and semi-shrub were predominant.The climate was changed into cool and less dry.The fouth pollen zone(Ⅳ)is represented by herbaceous plants such as Artemisia,Chenopodiaceae,Gram- ineae,Polygonaceae etc.indicating the Fulaerji was covered by cold-temperature grassland with a cold and dry climate.According to temperature decreasing at this zone,magnetostratigraphy and thermoluminescence dating we may take the start of the Ⅳ zone as the mark of the beginn- ing of Quaternary in this region.The age of the boundary between Pliocene and Pleistocene might be 2.4 million years or so.The geological age of pollen zones Ⅳ-Ⅶ,is assigned to Pleistocene.The characteritics of the sporo-pollen assemblage at these zones are quite different from one another.In the fifth pollen zone(Ⅴ),the vegetation was represented by a steppe or tundra with a cold and dry climate at its initial stage,but in the late stage the flora was characterized by a deciduous broadleaved forest and steppe,indicating the climate was warm and less humid.Pollen zones Ⅵ-Ⅶ,the herbaceous plants,such as Artemisia,Gramineae, Chenopodiaceae etc.were predominant.The climate was rather dry and cold.The plants of the boreal conifers as Picea,Abices,Larix,Pinus and the subpolor plants such as Betula were thriving in the low land and plain on the last glacial stage demonstrating that time the clim- ate was humid and cold. Judging from the pollen analyses of core QH70,the vegetational development and climatic changes in Fulaerji had been rapid since the Late Tertiary.It is more or less significance to use pollen analysis in hydrogeology and engineering geology.

本文根据富拉尔基 QH70孔(井深226.07m)73块孢粉样所取得的123科属埴物孢粉,依据其孢粉组合特征,从下至上划分出七个区域性孢粉带。第Ⅰ带属晚白垩世早期,植物群具热带-亚热带的面貌,反映当时的气候热而潮湿。第Ⅱ—Ⅲ带,地质时代为晚第三纪。组合中除葇荑花序植物为主外,同时又保存较多的亚热带落叶和常绿阔叶乔木树种,气候温暖潮湿。至第Ⅲ带晚期,草本植物和半灌木已占优势,表明气温下降,变干。第Ⅳ带由蒿、藜科、禾本科、蓼等中旱生的草本及半灌木组成温性草原,气候冷干。孢粉组合特征结合热释光和磁性地层,将该区上新世和更新世界限确定为距今240万年左右。第Ⅳ—Ⅶ带属更新世,各孢粉组合具明显的差异。在Ⅴ带的早期,植被尚属草原或冻原,气候寒冷干燥,但在其晚期,则属落叶阔叶林和草原,表明气候温暖半潮湿。在Ⅵ—Ⅶ带内,草本植物占优势,但在末次冰期时,由云杉、冷杉、落叶松和桦等组成的北方针叶林曾一度繁盛在低地和平原,气候寒冷潮湿。

 
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