English translation for "径级"
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- diameter class
Related Translations:
要径: critical pathpath, critical 径迹: [核子] track; creep path
- Example Sentences:
| 1. | Among the 88 species with more than 15 individuals , 87 . 5 % had an aggregated distribution pattern , and 9 . 1 % species were randomly distributed
研究中将树木依胸高直径分成四个生长阶段，并比较整个样区及各生育地及?同径级大小植物分布?型之差? 。 | | 2. | Analysis of size structure showed that each size class of neolitsea aurata var . glauca had quite a lot of individuals . it implies that the regeneration of neolitsea aurata var
结果表明：缙云山白毛新木姜子种群各径级都有一定数量的个体，种群更新在时间上是连续的。 | | 3. | A good number of saplings and middle - sized piants were found and most of them were individuals of dbh ranging from 2 to 4 cm . the number of old individuals were relatively small
幼树和中等大小个体的数量较多，且绝大部分集中在2 4cm径级，老龄个体较少，属增长型种群。 | | 4. | Gap disturbance had different effects on the density , frequency , distribution of size class , spatial distribution pattern , radial growth pattern of neolitsea aurata var . glauca population
林隙干扰对缙云山白毛新木姜子种群密度、频度、径级分布、空间分布格局、径向生长都有不同程度影响。 | | 5. | When comparing spatial patterns among different habitats within the plot , the aggregation intensity increased along a wind - stress gradient from the sheltered creek to the most exposed slopes
至于?同径级大小， 35 . 5 %的物种随著径级增加而由高?聚集的分布?型逐渐转移到较低强?的聚集或呈现随机分布，但有11 . 3 %的物种呈现相反的结果。 | | 6. | Glauca in gaps were all individuals of dbh ranging from 1 to 5 cm , individuals of dbh > 5 cm were rare . neolitsea aurata var . glauca in ridge gaps were almost individuals of dbh ranging from 1 to 4 cm , and the number of individuals in ridge gaps are smaller than gaps
径级分布：林隙内白毛新木姜子直径全部集中在1 5cm径级， 5cm以上没有分布；山脊林隙中白毛新木姜子基本集中在1 4cm径级，数量均少于林隙；非林隙白毛新木姜子1 3cm径级没有分布。 | | 7. | On the loess plateau , water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites , root biomass decreased with depth , and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes , and coarser root was the main sources of variance , and the root biomass , especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters , root extinction coefficient , indicated that the value of on northern exposition was more than 0 . 982 , while the value of on southern exposition was less than 0 . 982 , which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ) , which was in favor of the uptake of water and nutrients from deeper layers , helped the trees to adapt the arid environment , and promoted the growth of the upper parts of the tree
在中国西北黄土高原地区,水分是树木生长发育的主要限制因子.根系分布特征由于反映了树木对环境条件的利用程度而具有更加特殊的生态意义.本研究选择阳坡和阴坡不同立地上年龄一致的刺槐林调查了根系分布特征.根系垂直分布特征的调查结果表明,在所有立地上,根系生物量随着深度的增加而降低,其中细根的分布深度大于粗根的分布深度.方差分析结果表明:不同立地上不同径级根系的分布特征也有明显的差别,粗根是差异存在的主要原因,阴坡立地上的根系生物量,特别是细根生物量大于阳坡立地上的.对根系消弱系数的分析结果表明,阴坡立地上的根系消弱系数大于0 . 982 ,而阳坡立地上的根系消弱系数小于0 . 982 ,说明阴坡立地上刺槐根系的生物量在深层土壤中的分布相对量更大一些.其中细根的根系消弱系数大于粗根的,这种根系分布特征有利于根系对深层土壤水分养分的吸收利用,进而促进树木地上部分的生长发育.图3表3参15 | | 8. | Based on the topographic features and data of sediment particle size of bed load at the fluctuating backwater reach of liujiaxia reservoir , the streamwise variation and variation process of median diameter of bed load during silting and scouring periods of the fluctuating backwater reach are analyzed , and it can be seen that the turning point for the sediment diameter variation from coarse to fine is located at the outlet of shigou gorge of the fluctuating backwater reach
摘要根据刘家峡水库变动回水区的河段地形特征和历年河床质泥沙粒径级配资料，分析了变动回水区河段淤积和冲刷时，河床质泥沙中值粒径的沿程变化和历年河床质泥沙中值粒径变化过程，并指出粒径分布由粗变细的转折点在变动回水区寺沟峡峡口处。 | | 9. | Abstract : on the loess plateau , water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites , root biomass decreased with depth , and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes , and coarser root was the main sources of variance , and the root biomass , especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters , root extinction coefficient , indicated that the value of on northern exposition was more than 0 . 982 , while the value of on southern exposition was less than 0 . 982 , which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ) , which was in favor of the uptake of water and nutrients from deeper layers , helped the trees to adapt the arid environment , and promoted the growth of the upper parts of the tree
文摘:在中国西北黄土高原地区,水分是树木生长发育的主要限制因子.根系分布特征由于反映了树木对环境条件的利用程度而具有更加特殊的生态意义.本研究选择阳坡和阴坡不同立地上年龄一致的刺槐林调查了根系分布特征.根系垂直分布特征的调查结果表明,在所有立地上,根系生物量随着深度的增加而降低,其中细根的分布深度大于粗根的分布深度.方差分析结果表明:不同立地上不同径级根系的分布特征也有明显的差别,粗根是差异存在的主要原因,阴坡立地上的根系生物量,特别是细根生物量大于阳坡立地上的.对根系消弱系数的分析结果表明,阴坡立地上的根系消弱系数大于0 . 982 ,而阳坡立地上的根系消弱系数小于0 . 982 ,说明阴坡立地上刺槐根系的生物量在深层土壤中的分布相对量更大一些.其中细根的根系消弱系数大于粗根的,这种根系分布特征有利于根系对深层土壤水分养分的吸收利用,进而促进树木地上部分的生长发育.图3表3参15 |
- Similar Words：
- "径迹退火" English translation, "径迹中的径迹" English translation, "径迹中断计数" English translation, "径迹中断密度" English translation, "径迹阻力" English translation, "径级分布表" English translation, "径间" English translation, "径间脉络" English translation, "径截面的" English translation, "径截纹" English translation
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