优势度

与土壤的PH值是正相关的，其他的都是随着土壤养分的增加，缬草的优势度变小。

And the dominance of valeriana officinalis descends with the increasing of soil nutrition .

Cu、Zn、Pb含量变化与有孔虫群优势度及主要属种变化之间存在显著相关性。

The content change of Cu , Zn , Pb are related to dominance and species of foraminifera .

施N肥使落叶松林地土壤动物优势度指数降低，而水曲柳林地增加。

N addition also decreased the dominant index in larch plantation , but increased in ash plantation .

AHP中计算排序向量的优势度矩阵法

Dominance Matrix Method for Calculating Priority Vector in AHP

B层土壤速效P的含量与群落生态优势度呈显著正相关；

There is very significant and positive correlation between the contents of soil readily available P in the layer B and ecological dominance of the community .

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。

Secondly the higher ecological dominant degree of vegetation , pH values and organic matter contents in the soils , and the poorer sorting indices .

发育后期，随着多样性指数、丰富度指数、优势度指数的增加，全N呈逐渐增加趋势，随着均匀度的增加，全N变化不明显；

In middle development period , with the increase of variety indices , evenness indices , dominance indices , the total Nitrogen presents the variation tendency of V type .

利用群落优势度（C）衡量了两个群落的稳定性，表明郁闭林的群落优势度远高于人为干扰林。

Comparing the stability of two forests with community dominance index ( C ), it was clear that the C of the closed stable forest was higher than that of the disturbed forest .

4草相对优势度与土壤pH值和含盐量的相关系数分别为0.826和0.760，而C3植物均为负值。

The correlation coefficient between relative dominance of C_4 forage and soil pH value , or salt content was 0.826 or 0.760 respectively , but that for C_3 plants was negative .

基于产业优势度模糊熵优选模型和DEA模型，构建了资源型城市产业四限格屏幕优选模型。

Based on fuzzy entropy optimization model and DEA model , the four quadrant screen model for industry optimization is proposed .

10a间，景观多样性指数和相对丰富度指数降低，优势度指数有所增加。

Landscape diversity indices and relative richness decreased , but dominance indices increased .

应用群落多样性指数（D）、均匀度（J）、生态优势度（C）等指标，对腾格里沙漠东南边缘不同生境的天然植物群落进行了调查。

Plant communities at different habitats in the southeastern Tenggeli Desert were studied by means of diversity index ( D ), the community evenness formula ( J ) and ecological dominance ( C ) .

应用GIS技术研究农业景观格局变化结果表明，福建省漳浦县马坪镇整体景观多样性指数降低，优势度指数和均匀度指数增加。

The change of agriculture landscape pattern was studied with GIS technology . The result shows that the index of diversity is declined in Maping Town , Zhangpu County , but the indexes of dominance and evenness are raised .

在GIS支持下研究了宜昌地区土壤侵蚀强度景观的面积对比、多样性指数、优势度指数和多度等参数。

The essential elements of the spatial structure of landscape are patch , corridor , matrix by GIS , we study on landscape of soil erosion about following parameter : ratio of area , diversity index , dominance index and multiplicity .

选取平均斑块面积、景观优势度、平均坡度、平均海拔和破碎度因子对其进行综合分析，并借助DEM模型进行景观生态规划。

Indices including mean patch area , landscape dominance , mean slope , mean altitude , and fragmentation degree were selected and synthetically analyzed , with the ecological landscape planning made by DEM model .

2不同棉田节肢动物多样性比较分析表明，转Bt基因棉田与对照常规棉田物种、功能团和亚群落的多样性、优势度、均匀度均无显著性差异。

Analysis showed that there was no significant difference between transgenic Bt cotton fields and routine cotton field in diversity , dominance , evenness and abundance of species , functional groups , sub-community and community .

水体水境7个指标的景观多样性指数（H）、优势度指数（D）和破碎度（C）存在着显著差异，H值以Chla最大（0.58），DO最小（0.04）；

The seascape diversity ( H ), dominance index ( D ) and fragmentation index ( C ) of 7 indices in water body differed significantly . H of Chl a is the highest with 0.58 and that of DO the lowest with 0.04 ;

从物种多样性指数上看，除优势度指标经择伐林分升高外，种数、丰富度指数、Shannon-Wiener多样性指数、Pielou均匀度指数都稍低于对照林分。

Species number , abundance index , Shannon-Wiener biodiversity index , Pielou uniformity index in the community are little lower than those of contrast forest .

种类繁多的乡土物种使群落具有较高的物种多样性，ShannonWiener指数范围为2.305～3.145，生态优势度为0.063～0.151，均匀度为0.600～0.749；

( Various ) local species contributed to the communities with great species diversity . Shannon-Wiener Index was 2.305 ~ 3.145 , ecological dominance was 0.063 ~ 0.151 , and evenness was 0.600 ~ 0.749 ;

经测定各生境的多样性指数H′，优势度指数C′，均匀性指数E′和相似性系数，结果表明植被类型、土壤有机质含量是影响土壤动物群落结构的主要生态因子。

The results showed it was these main ecological factors including the vegetation types and organic contents that had effect on structure of the soil animal community after analyzing the indexes of diversity ( H )′, dominance ( C )′, evenness ( E )′ and comparability coefficient of different habitats .

多样性指数（H′）最大值和最小值因群落、月份不同而不同，其相对大小为D>C>A>B，Pielou指数（Js）和辛普森优势度指数（C）总体水平变化与多样性指数相同。

The maximum and minimum of diversity index ( H ′) varies with different community and month , and its relative value was D > C > A > B , either did Pielou index ( Js ) and Simpson index as a whole .

转基因水稻田与常规水稻田中土壤动物群落的密度、类群丰富度、Shannon-Wiener多样性指数、Pielou均匀度指数、Simpson优势度指数和密度&类群指数之间均没有显著差异（P＞0.05）。

There was no significant differences in community density , group richness , Shannon-Wiener index of species diversity , Pielou index of evenness , Simpson index of dominance and density-group index between Bt transgenic rice and non-Bt transgenic rice ( P0.05 ) .

土壤种子库物种多样性的变化表现为，随着演替的进行，优势度指数逐渐减小，而丰富度指数、均匀性指数和Shannon-Wiener多样性指数逐渐增大，恢复到32年时达到最大。

Along with the restoration stages , the dominance index decreased while the species richness index , evenness index and Shannon-Wiener diversity index increased gradually and come to the highest value in the plots after 32-year restoration .

依据Berger-Parker（1974）优势度指数（d），分析得出了不同时期棉田蜘蛛的优势种类，并对其季节变动趋势进行了研究。

The spider species in different period in cotton field was obtained using Berger Parker dominance index ( d ) .

不同海拔高度高山绣线菊种群的优势度变化不大，在3050m～3250m区间其重要值超过了头花杜鹃种群。

The dominance of Spiraea alpina in the different altitude was almost the same and IV of it was more than that of Rhododendron capitatum from 3050m to 3250m .

4Bt玉米同对照相比，对捕食性天敌昆虫类群组成、各类群优势度、捕食性昆虫的总量及总量的动态变化方面没有显著的影响；

The total numbers and the dynamics of predator population , the species composition and abundance of species in Bt corn field were not significantly different comparing with the control .

分析红豆树（Ormosiahosiei）百年以上老林分的11个乔木层树种的相对优势度、物种多样性、均匀度、生态位宽度、生态位重叠度等指标。

The relative dominant degrees , species diversity , even degrees , niche width , niche overlapping degrees , and other indicators were analyzed by the arbor trees of 11 stories in the hundred-year-old virgin forest of Ormosia hosiei Hemsl . et Wils .

运用景观生态学方法，选取了斑块面积、斑块形状指数、Shannon-Weaver多样性指数、斑块优势度指数、斑块破碎度指数五个景观格局指数用于海岸带生态的景观格局评价。

With the landscape ecological methodologies , this thesis selected five ( 5 ) landscape pattern indexes , patch area , patch shape index , Shannon-Weaver diversity index , dominance index and fragmentation index , for the assessment of landscape pattern in coastal zone ecosystem .

我们在南中国海的研究结果表明，沿着从河口至外海的盐度梯度，Alpha-proteobacteria在丰度和细菌生产力方面的优势度逐渐上升；而Beta-proteobacteria则呈相反的趋势；

Our results from the South China Sea ( SCS ) showed the preponderant contribution of beta-proteobacteria in freshwater and alpha-proteobacteria in saltwater to abundance and total bacterial production along the salinity gradient from the Pearl River estuary to the open water .

应用Berger-Parker（1974）优势度指数（d）分析得出了不同时期果园蜘蛛群落的优势类群及优势种，并对优势种蜘蛛的田间种群密度和动态进行了初步分析；

Berger-parker ( 1974 ) index of dominant degree ( d ) showed that dominant species and dominate species of spider community in orchard in different time . Whereas , density and trends in fields of dominant species of spider were primary analysed .