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林木个体
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  individual tree
     Growth Analysis of Individual Tree Basal Area of Western Yellow Pine Introduced in Kostelec Region
     KOSTELEC地区西黄松林木个体胸高断面积生长分析(英文)
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     It showed the phenomenon of soil desiccation with the density increasing in the woodland of Robinia pseudoacacia like the matured stand of the arid and semiarid regions. With the decreasing of water and the gradual increase of water consumption by individual tree, the conflict of water supply and demand was more pronounced.
     不同密度的刺槐植树带随着林分密度的增大,渐渐隐现出干旱、半干旱地区成林的土壤干化现象,而且随着降水的减少和林木个体水分消耗的递增,林分内水分供需矛盾越来越显著。
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  “林木个体”译为未确定词的双语例句
     Data from 4 100m×100m natural forest plots,then uniform angle index and pair-correlation function are used to analyze the spatial patterns of trees in forest plots with varying areas.
     采用4块100m×100m的天然林样地材料,分别利用角尺度和双相关函数分析4块大样地中不同面积的窗口(小样地)对应林木个体的空间分布格局。
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     Basically,there are two research methods,qualitative description and quantitative analysis. Over 20 various competition indices were developed to estimate competition degree. However,none of these indices could accommodate the problem of tree canopy changes in the quantitative analysis reasonably.
     研究林木个体之间的竞争是研究森林生态系统基础,林木竞争的研究方法主要有定性描述和定量分析两种方法并先后提出了20多种衡量竞争程度的竞争指数系统,但有关学者研究后认为,这些竞争指数都没有较好地解决了定量分析中树冠变化的问题。
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     Research on the Application of Stereo Vision Technology on Measuring Tree Distribution Pattern
     立体视觉技术应用于林木个体分布格局测定研究
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     Available use efficiency of rainfall water resources for water-collecting afforestation and water production efficiency of forest individual and community;
     ·集水造林降水资源有效利用率及林木个体和群体水分生产效率
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     There is a great difference of oleoresin productivity between individual trees.
     林木个体之间产脂量的差异相当大。
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  相似匹配句对
     Mathematical Simulation of Individual Tree Growth of Pinus tabulaeformis
     油松个体林木生长的数学模拟
短句来源
     Characteristics of Short-rotation Eucalyptus Individual Trees and Stands
     短轮伐期桉树人工林个体林木特征研究
短句来源
     Estimation for property of forest-crop.
     林木资产评估
短句来源
     individual spirit;
     个体精神;
短句来源
     On the Essence of the Individual
     试论个体的本质
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  individual tree
According to the volume increase model of an average individual tree in a plant population and the theory of invariable final output, we put forward a new density model of plant population: Vβ=ANβ + B.
      
Here N means the stand density and V stands for average individual tree volume; A, B and gb are parameters that change with growth stage.
      
To estimate the root biomass of an individual tree using D2H, an exponential model was selected with the highest coefficient ranging from 0.94 to 0.99.
      
The canopy biomass was derived by adopting the regression equations to all branches of each individual tree.
      
Korean pine (Pinus koraiensis) interspecific competition and intraspecific companioned with other species competition in old growth Korean pine forest in Northeast China were studied using Hegyi's competition index model for individual tree.
      
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Based on the analyse of untrient Content in 540 Samples, the Variation in nutrient Content of Pinustabulaeformis Carr. needles with age and position in crown were examined. The resuls indicated that the percentage of nitrogen, phosphorus, potassium and magnesium were found to decrese with age of needles, but calsium indecrese. The content of N, P, K and Mg in needles indecr ese towards the base of the crown, while Ca decrese. Mid-crown position were recommended as expressive of crown means, whereas aspect was...

Based on the analyse of untrient Content in 540 Samples, the Variation in nutrient Content of Pinustabulaeformis Carr. needles with age and position in crown were examined. The resuls indicated that the percentage of nitrogen, phosphorus, potassium and magnesium were found to decrese with age of needles, but calsium indecrese. The content of N, P, K and Mg in needles indecr ese towards the base of the crown, while Ca decrese. Mid-crown position were recommended as expressive of crown means, whereas aspect was not considered important. Forthmore, needles of inner crown should avoided collecting for nutrient analysis. Variation range of nutrient contents of needles among different trees were given

本文通过对540个叶样的营养元素分析.研究了油松针叶中营养元素含量与叶龄及采样部位的关系。结果表明,随着叶龄的增大,针叶中N、P、K、Mg的百分含量降低,而Ca的含量增加;针叶中N、P、K、Mg含量从树冠基部向顶部有所增加,而Ca含量有所降低;树冠中部针叶中营养元素含量与全树冠针叶元素含量的平均值相接近;不同冠向针叶中营养元素含量无显著差导。此外,文中还指出了叶分析应避免采集树冠内膛侧枝的针叶以及不同林木个体间针叶中营养元素的变化范围。

Generally;the distribution of the poplars in the world is from temperated zone to middle subtripical zone,their compositions are rather pure and their constructions are rather simple.The appearance of poplar forest in Hainan Island is a new discovery and a new distribtion in the world.This research is a synecology on that poplar association.The Result has been found that it is a multispecies,multi-layers,tropical coniferous and broad-leaved mixed forest which the dominant is poplar,that its species composition...

Generally;the distribution of the poplars in the world is from temperated zone to middle subtripical zone,their compositions are rather pure and their constructions are rather simple.The appearance of poplar forest in Hainan Island is a new discovery and a new distribtion in the world.This research is a synecology on that poplar association.The Result has been found that it is a multispecies,multi-layers,tropical coniferous and broad-leaved mixed forest which the dominant is poplar,that its species composition is belong to 12 family,13 genus,16 species which most are tropical essen tial,as 13 species are tropical(81%),and that in the forest the relative density,relative dominance,relative frequency and the importance value index of the Populus qiondaoensis sociation are the first,and of the pinus lateri sociation are the second.These two species are the dominant and the snb-dorninant of the association.They are tall and straight.The former is 120cm in b.h.d.and the latter is 38m in height.Their single tree volume can approach about 16-17m3.From the result of this study,it is recommended to research and develope the topical poplar ecosystem.

杨树林在世界上一般分布在热带至中亚热带,群落的组成和结构较简单。海南岛出现杨树林,是新的发现。本文从群体生态学上对该群落进行研究,发现它是多树种、多层次和以杨树为优势种的热带针阔混交林;其树种组成递属于12科、13属、16种,其中属热带的树种达13种,占81%,绝大部分树种为热带成分,而林分中琼岛杨这个种群的相对密度、相对优势度,相对频度和重要值均为全林之冠,南亚松次之,二者分别为群落的优势种和亚优势种,它们的林木个体高大通直,前者胸径达120cm,后者树高达38m,单株蓄积量均可达16~17m~3。本文研究结果可作为今后研究和建立热带杨树生态系统提供依据。

An exceptional damage to Pinus tabulae for mis Carr. stand by late frost indicated that when the, temperature fall down to -2.7℃ during the vigorous growth stage of primary tender needles, the tips of needles could be injured seriously. The cold endurance of individual plant varit-s considerably. The situation in which damage occur or not was mainly controlled by topogrophical factors (e.g. slope and elevation) . Thus the damaged pine stands distributed in a discontinuous patter.

本文报道一例罕见的晚霜对油松林的危害。调查表明油松初生嫩叶在活跃生长期如遇-2.7℃以下的低温,部分林木的初生嫩叶梢端即可受害;林木个体的耐寒力有很大差异。地形因子(主要是坡向、海拔)对成灾与否具有支配作用,它使受害林分在空间的分布里不连续格局。

 
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