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生态优势度     
相关语句
  ecological dominance
     The Shannon-Weiner index of diversity,evenness index,ecological dominance of the communities are 0.53~3.30,0.48~0.89 and 0.06~0.71,respectively.
     群落的多样性指数为0.53~3.30、均匀度指数为0.48~0.89、生态优势度0.06~0.71。
短句来源
     The resultsshow that species diversity index is about 1.386-2.955, the ecological dominance is about 0.065-0.351,succession degree is about 12.367-91.963 in the region.
     结果表明,该地区的物种多样性指数为1.386—2.955,生态优势度为0.065—0.351,演替度为12.367—91.963。
短句来源
     based on the measurement of the ecological dominance index,the index of the gap edge effect in the gap border area was about 0.653 1~2.740 3.
     而用生态优势度值测定的林隙边缘区的边缘效应强度值为0.653 1~2.740 3。
短句来源
     The species diversity (D is from 0 603 to 2.984)of the desert is rather low,and the ecological dominance(C is from 0 724 to 0 195)is rather high,which show s the ecotope vulnerability of the desert.
     荒漠植物群落多样性指数(D=0.603~2.984)和均匀度(J=0.337~0.691)都较低,而生态优势度(C=0.724~0.195)较高,说明荒漠植被生态环境的脆弱性,群落结构越复杂,多样性指数越高;
短句来源
     The average density of tree layer of the communities is 0 54~1 74 individuls/m 2. The Shannon-Weiner index of diversity, evenness index, ecological dominance of the communities are 2 11~3 02, 0 54~0 87 and 0 12~0 40, respectively.
     乔木层的平均个体密度为 0 .5 4~ 1 .74株 /m2。 群落的多样性指数为 2 .1 1~ 3 .0 2 ,均匀度 0 .5 4~ 0 .87,生态优势度 0 .1 2~0 .40。
短句来源
更多       
  ecological dominant
     e. 400 m-2.Among the 29 sampling sites,Guanshanqiao was the highest in benthic macroinvertebrate diversity and its species richness,Shannon-Wiener diversity,evenness and ecological dominant index was 54,4.36,0.76 and 0.08,respectively.
     观山桥样点大型底栖无脊椎动物群落多样性最高,群落物种数、Shannon-Wiener多样性指数、均匀度和生态优势度分别为54,4.36,0.76和0.08。
短句来源
     secondly the higher ecological dominant degree of vegetation,pH values and organic matter contents in the soils,and the poorer sorting indices.
     其次是较高的植被生态优势度、土壤中有机质含量和pH值,以及较差的土壤粒度分选性。
短句来源
     Study on community structure of broadleaf seed base at Wanshan Mountain of Kaihua,Zhejiang province showed that the base is located at subtropical evergreen broadleaf forest with rich plant species,no evident dominant tree or shrub at these two layers,low Simpson ecological dominant index,5 tree species over 5% relative importance value of arbor layer,11.34% of Castanopsis eyeri.
     对开化王山阔叶林采种基地集约经营区进行群落学调查,结果表明其植物种类丰富,乔木层有93种,灌木层有20种,草本层有20种,层间植物有16种,乔木层灌木层优势种不明显,Simpson生态优势度指数低,乔木层相对重要值超过5%的有甜槠、木荷、马银花、红楠、东南石栎5种,甜槠最高占11.34%;
短句来源
     Study on community structure of broadleaf seed base at Wanshan Mountain of Kaihua, Zhejiang province showed that the base is located at subtropical evergreen broadleaf forest with rich plant species, no evident dominant tree or shrub at these two layers, low Simpson ecological dominant index, 5 tree species over 5% relative importance value of arbor layer, 11.34% of Castanopsis eyeri.
     对开化王山阔叶林采种基地集约经营区进行群落学调查,结果表明其植物种类丰富,乔木层有93种,灌木层有20种,草本层有20种,层间植物有16种,乔木层灌木层优势种不明显,Simpson生态优势度指数低,乔木层相对重要值超过5%的有甜槠、木荷、马银花、红楠、东南石栎5种,甜槠最高占11.34%;
  ecological dominance indices
     Herbage richness, diversity, ecological dominance indices doesn't change notably with altitudinal gradients.
     草本植物的丰富度指数、多样性指数、生态优势度指数,在海拔梯度上的变化没有显著变化。
短句来源
     The species diversity,evenness and ecological dominance indices of fleas communities in 7 main ecological environments were measured and compared.
     并对以苍山为主体的山地各主要生态环境蚤类的群落结构、物种丰富度、物种多样性、均匀度和生态优势度进行了测定和比较。
短句来源
     The community structure,species diversity,evenness and ecological dominance indices of fleas communities in 7 main ecological environments were measured and compared. According to the investigation,the stability of fleas communities were coniferous and broadleaf mixed forest>wet evergreen broadleaf forest>evergreen broadleaf forest>fir forest>subalpine bush and grasslands>city proper>suburbs and cultivated area.
     通过对各主要生态环境内蚤类群落的结构、物种丰富度、物种多样性、均匀度和生态优势度测定和比较后 ,认为当地蚤类群落的稳定性是针阔叶混交林 >季风湿性常绿阔叶林 >常绿阔叶林 >苍山冷杉林 >亚高山灌丛草甸 >城市居民区及山坡耕作地。
短句来源
     Besides, the species diversity indices, evenness and ecological dominance indices of fleas communities in 4 main ecological environments were measured and compared.
     此外 ,对该山地各主要生态环境蚤类的群落结构、物种丰富度、物种多样性、均匀度和生态优势度进行了测定和比较
短句来源
  ecological concentration
     The richness was 18~34.The ecological concentration was 0.0879~0.3361. The diversity was 1.6433~2.9249. And the evenness was 0.5660~0.9017.
     物种丰富度18~34,生态优势度0.0879~0.3361,多样性指数1.6433~2.9249,均匀度指数0.5660~0.9017,生态优势度越大,生物多样性和均匀度指数越低。
短句来源
     The species component and species richness,dominance,ecological concentration,diversity and evenness of arthropod community in summer maize fields were studied in detail.
     系统研究了夏玉米田节肢动物群落的相对多度、丰富度、生态优势度、多样性指数和均匀度的变动。
短句来源
     Analysis on the dynamics of community showed that the indices of the community were obviously fluctuated with time. During the period of June, 29 to Sept, 27, the indices of ecological concentration was low, the diversity and evenness were high. So the structure of arthropod community was rational.
     群落动态分析,群落特征指数都有明显的时间变化,6月29日到9月27日期间,生态优势度低,多样性和均匀度指数高,群落结构较合理。
短句来源
     The richness was 22~43.The ecological concentration was 0.115 5~0.813 1.The diversity was 0.596 1~2.726 29.And the evenness was 0.192 9~0.732 4.During the period of July 15 to October 27,the indices of ecological concentration was low,the diversity and evenness were high.
     物种丰富度22~43,生态优势度0.1155~0.8131,多样性指数0.5961~2.72629,均匀度指数0.1929~0.7324。
短句来源

 

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      ecological dominance
    The change between the juvenile and early reproductive periods is perhaps associated with the onset of ecological dominance and significant allocations of energy to reproduction.
          
    This ingestion-excretion relationship, which is consistent with previous respiration and fecundity studies, suggests that the ecological dominance of C.
          
    Ecological dominance of the red imported fire ant, Solenopsis invicta, in its native range
          
    invicta showed the highest ecological dominance and the second-best behavioral dominance after Camponotus blandus.
          
    Finally, in contrast to the Argentine ant's ecological dominance throughout its introduced range, it did not appear dominant in the native ant assemblages studied in Argentina.
          
    更多          
      ecological dominant
    The situation in Aral region is regarded as a model of a large-scale ecological disaster with a medical-ecological dominant.
          
    albifasciatus were detected on the basis of relative abundance (ISA index), ecological dominant groups, and species association ("I" index).
          
      其他


    Ecological dominance is a index that shows the degree of dominance concen-tration.The ecological dominance of seven forest communities in Dinghushan aremeasured,the use and the effect as well as ecological meaning of ecological do-minance are explorated.The retsults show that Simpson index,C=(?)(ni/N)~2,is suitable toexpress concentration of dominance,Simpson index 0.12 is the ecological domin-ance value of the south-subtropical evergreen broad-leaved forest,the ecologicaldominance is negatively correlated with...

    Ecological dominance is a index that shows the degree of dominance concen-tration.The ecological dominance of seven forest communities in Dinghushan aremeasured,the use and the effect as well as ecological meaning of ecological do-minance are explorated.The retsults show that Simpson index,C=(?)(ni/N)~2,is suitable toexpress concentration of dominance,Simpson index 0.12 is the ecological domin-ance value of the south-subtropical evergreen broad-leaved forest,the ecologicaldominance is negatively correlated with both diversity and equitability.

    本文以Simpson 指数,■测定鼎湖山森林群落的生态优势度,研究结果表明:Simpson指数对亚热带森林群落是一个合适的生态优势度指标,南亚热带常绿阔叶林的生态优势度为0.12左右,生态优势度与多样性和均匀度两者是负相关.

    The ecological dominance of 14 subtropical forest communities in Guangdong are measured in this paper. According to further research of the measured results, the use and the effect as well as the ecological meaning of ecological dominance index are explored.

    本文应用simpson优势度指标,测定广东亚热带14个森林群落的生态优势度。对测定结果深入分析,说明了生态优势度指标在森林群落分析上有较大的意义,可以衡量不同的群落类型,作为群落分类的辅助指标;能反映群落生境变化对群落结构的影响,以及说明森林群落演替过程群落结构的变化;广东亚热带森林在自然状况下向气候顶极群落的演替过程中,生态优势度指标逐渐下降。 本文还进一步探讨生态优势度的生态学涵义。说明生态优势度指标的群落生态学意义,指出与物种多样性指数、群落均匀度在概念上的联系与差别,以及三者在应用上的异同。

    In this paper, Simpson index, Shannon—Winner index and dispersiveness index are used to measure the ecological dominance, species diversity and dispersiveness of the Taxus mairei forest community in shanxi separately. The results are as follows: The ecological dominance of the conifer forest is greater than the conifer—broadleaf mixed forest.Ecological dominances vary with different community construction. The ecological dominance of the shrub layer is less than that of the arbor layer. The further the community...

    In this paper, Simpson index, Shannon—Winner index and dispersiveness index are used to measure the ecological dominance, species diversity and dispersiveness of the Taxus mairei forest community in shanxi separately. The results are as follows: The ecological dominance of the conifer forest is greater than the conifer—broadleaf mixed forest.Ecological dominances vary with different community construction. The ecological dominance of the shrub layer is less than that of the arbor layer. The further the community approaches climatic Climax, the less its ecological dominance is. There is a positive correlation between ecological dominanee and dispersiveness index, but there is a negative correlation between the former and species diversity as well as between dispersiveness index and species diversity

    本文用Simpson指数,Shannon—Winner指数,分散性指数度量了山西南方红豆杉森林群落的生态优势度。结果表明:针叶林生态优势度大于针阔叶混交林。群落结构不同,生态优势度亦不同;灌木层生态优势度皆小于乔木层。在不同的演替阶段,群落的生态优势度亦不同;愈接近气候顶极,生态优势度就越小。生态优势度指标与分散性指数呈正相关,而生态优势度,分散性指数皆与物种多样性呈负相关。

     
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