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杉林
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  spruce forest
     With increasing of artificial spruce forest ages, the absorption and the retention increased, but the utilization coefficient decreased. The return and the cycling coefficient firstly increased and then decreased, and recycling period became long. The order of nutrient element utilization coefficient of artificial spruce forest was CaO>MgO>N> K 2O >P 2O 5 ,and that of the recycling period was P 2O 5>K 2O>MgO>N>CaO.
     养分的吸收、存留量天然林高于人工云杉林 ,人工云杉成熟林和天然林的利用系数和周转期相似 ,人工云杉林随着抚育林龄的增加 ,吸收、存留量增大 ,利用系数降低 ,归还量和循环系数先增后降 ,周转期则变长 ,人工云杉林利用系数顺序为 :CaO >MgO >N >K2 O >P2 O5,周转期顺序为 :P2 O5>K2 O >MgO >N >CaO .
短句来源
     In the same site of China spruce forest,infection rate and infection intensity index of mycorrhizae were obviously higher at initial stage(young age) and aged stage(matured and over-matured) than at steady stage of the community.
     相同立地条件下,云杉林型在种群建立(幼林龄)和衰退(成过熟林)时菌根侵染率和侵染强度指数都显著高于种群相对稳定(中林龄)时期,在养分较为肥沃的土壤环境中,菌根侵染率、侵染强度指数与营养因子不存在明显的相关性;
短句来源
     STUDY ON SOIL WATER FLOW LAW UNDER SITKA SPRUCE FOREST IN NORTH WALES
     北威尔士北美云杉林土壤水运动规律的研究
短句来源
     Furthermore,the spruce forest in sandy land was obviously different with typical dark coniferous forest.
     有60.8%的科、22.3%的属、7.2%的种与长白山的典型暗针叶林相同,因此沙地云杉林仍然属于暗针叶林范畴。
短句来源
     The fifth, the direct reason-predisposing factors of spruce forest decline in low-lying land in eastern mountain area in Heilongjiang province is global climate change, the increased temperature causes northern movement of south boundary of permafrost in Daxinganling and Xiaoxinganling mountain area.
     5、黑龙江省谷地云冷杉林衰退的最直接的原因即诱发因素是全球变化当中的温度变化,温度的明显升高导致了大小兴安岭的多年冻土南界的北移,而原来的南界地区——伊春市带岭区的多年冻土已基本上完全消融,从而导致了谷地云冷杉林的水分失调——春季过于干旱,而夏、秋两季湿度又过大。
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  “杉林”译为未确定词的双语例句
     Analysis on Stable δ ~(13)C and δ~(18)O of CO_2 over the Boreal Black Spruce
     黑云杉林大气CO_2稳定同位素组成δ~(13)C,δ~(18)O的分析
短句来源
     the pool of litter of Picea asperata plantations in different succession stages was 6.8~26.7×10 3kg/hm 2, in which the return of the main nutrient elements was 323.3~1246.2kg/hm 2, and the order was in sequence of Ca>N>Mg>K>P.
     人工云杉林不同恢复阶段凋落物贮量为 6.8~ 2 6.7× 10 3 kg/hm2 ,主要营养元素归还量为32 3.3~ 12 4 6.2kg/hm2 ,排序为Ca >N >Mg >K >P。
短句来源
     The total biomass of L. chinensis forest is 205. 565t/ha, including the tree layer 166. 587t/ha, the shrubs layer 37. 673t/ha.
     太白红杉林的总生物量为205.565t/ha,其中乔木层166.587t/ha,灌木层37.673t/ha.
短句来源
     The results showed that the amount of litter layer is natural evergreen broadleaved forest(25.68 t/hm~2)>Metasequoia glyptostroboides forest(18.14 t/hm~2)>Sassafras tzumu forest(9.95 t/hm~2)>Cryptomeria fortunei forest(1.13 t/hm~2).
     结果表明:枯落物层蓄积量天然常绿阔叶林(25.68 t/hm2)>水杉林(18.14 t/hm2)>檫木林(9.95 t/hm2)>柳杉林(1.13 t/hm2)。
短句来源
     Analysis on the Population Structure of Picea schrenkiana Fisch. et Mey.-Dryopteris filix-mas Stand
     鳞毛蕨(Dryopteris filix-mas)天山云杉林种群结构分析
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  相似匹配句对
     ^PICEA-ABIES FORESTS OF THE NORTHEAST CHINA
     中国东北的云冷杉林
短句来源
     STUDIES ON THE CATHAYA COMMUNITIES
     中国银杉林的初步研究
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  spruce forest
Changes of Structural and Physicochemical Parameters of Spruce Forest Ecosystem under the Effect of Moose (Alces alces L.)
      
The role of moose in the dynamics of structural, physical, and chemical parameters of a forest community is considered using an example of a southern taiga wood-sorrel spruce forest.
      
The mode of spatial distribution of soil animals and their trophic activity was studied in the sod-podzolic soil under a spruce forest.
      
Carbon dioxide exchange was studied in the photosynthetic apparatus of Siberian spruce (Picea obovata Ledeb.), Siberian larch (Larix sibirica Ledeb.), and weeping birch (Betula pendula Roth.) in a mature spruce forest.
      
The seasonal growth of shoots, needles, and the trunk in the Norway spruce has been studied in a bilberry spruce forest in the middle taiga subzone of Karelia.
      
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An account on the application of multivariate analyses to forest soils, including multiple regression, discriminant analysis, cluster analysis, factor analysis and canonical analysis thar have been used by domestic and foreign researchers, is made here.

本文介绍国内外关于多元分析方法(包括多元回归,判别分析,聚类分析,因子分析和典范变量分析等)在森林土壤学中应用的事例。 在我国,多元分析在土壤学上的应用始于七十年代后期。一开始就有一些定量和数值化研究工作是与森林土壤及其水分状况分类、森林土壤生产力评价和森林土壤障碍性因子诊断等课题有关。例如,对东北地区灰化土与暗棕壤的判别,用模糊聚类法进行华北褐色森林土的数值分类,用系统聚类法将南京附近杉林下黄棕壤的湿度状况进行归类,对江西省杉林下土壤障碍性条件的判别分析,以及用多元回归对南方杉木林或其他树林下土壤生产力的评价,等等。

The West Tain Mu Mountain is one of the sancturies on our country. It has been well looked after in the mountain which are abundant in seed plants as well as bryophytes. No detailed survey and reports had been made on the bryophyte in this mountain. The authors climbed and surved the mountain four times, respectively in May 1977 April and October 1978 and May 1979, and gathered 700 specimens. Based on those specimens this report is written. It contains a list of bryophytes from the Tain Mu Mountain, a key to...

The West Tain Mu Mountain is one of the sancturies on our country. It has been well looked after in the mountain which are abundant in seed plants as well as bryophytes. No detailed survey and reports had been made on the bryophyte in this mountain. The authors climbed and surved the mountain four times, respectively in May 1977 April and October 1978 and May 1979, and gathered 700 specimens. Based on those specimens this report is written. It contains a list of bryophytes from the Tain Mu Mountain, a key to dominant genus and species as wall as their ecological and geological distributions.

西天目山位于浙江西部,是我国管理得较好的自然保护区之一。这里有保存得很好的柳杉林,种子植物生长繁茂,苔藓植物也甚丰富。前此,未有人对此山的苔藓植物进行过详细的调查和报导。作者曾于1977年5月,9月;1978年4月,10月;1979年5月五次登山,采集标本700号,据此写出本文。内容包括本山苔藓植物名录;常见属种检索表;苔藓植物的生态分布和地理分布情况。

In this paper, the author took the intercropped fields of forest (Taxodium ascedens Brongn) and cereal crops as analytic target, which is located in Han Jiang County of Jiangsu Province. The shade effect of upper trees on the crops was discussed and some numeric bases were provided for the reasonable arrangement of intercropping density and full utilization of light and heat resources.

本文以江苏省邗江县池杉(Taxodium ascedens Brongn)、稻麦(水稻和小麦轮作)间作田为基本分析对象,讨论了池杉对于林下作物的遮荫效果,为合理安排间作密度,充分利用光热资源,提供了数量化的依据。 根据传统公式计算了杨寿地区一年中逐日每隔1小时一次的太阳高度角和方位角,讨论了池杉树冠的几何学持征、林下作物(主要是水稻)的光能利用特性、单株池杉造成的重复遮荫时间,以及在不同生态条件下,保证10年生池杉林不出现株、行间重复遮荫的合理造林密度。 文中给出了计算任何一地太阳视运动轨迹(包括太阳赤纬,日照时数,每隔1小时一次的太阳高度角、方位角等)的系列程序(BASIC语言)和池杉树冠结构的几何学近似处理方法。

 
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