1) Shannon index
Shannon指数
1.
The results indicated: Firstly, the aboveground biomasses were positively correlated with the average depths of soil layers for all sampling plots; secondly, the species richness and Shannon index were both negatively correlated with altitude, while other environmental factors, which could also affect the species ri.
(2)海拔高度与生物多样性成负相关关系,而其它影响物种丰富度或Shannon指数的环境因子仅在个别群落类型中起作用。
2) Shannon-wiener index
Shannon-wiener指数
1.
There was a distinct positive relationship among Richness index,Margalef index and Shannon-wiener index.
丰富度指数、Margalef指数与Shannon-wiener指数相关性显著,在小的空间研究尺度内,草地植物群落物种多样性指数受丰富度指数的影响较大。
2.
Based on Shannon-Wiener index,a new method was recommended.
针对森林物种多样性保育价值评估尚缺乏逻辑推理方法的现状,提出了更为客观合理的Shannon-Wiener指数评估法。
3.
GLM(generalized linear models) was employed to fit Shannon-Wiener indexes of arbor,shrub and herbaceous layers and the overall Shannon-Wiener index of the communities in the forest vegetations of Hungou of Zhongtiaoshan Mountain with environmental factors and SΦrenson index was used to examine species similarities of neighboring communities types along the altitude.
借助广义线性模型(generalized linear models,GLM),拟合了混沟森林植被乔、灌、草各层及群落总体的Shannon-Wiener指数与环境因子间的关系,并通过SΦrenson指数研究了海拔梯度上相邻森林群落类型物种组成的相似性,结果显示:(1)土壤pH值和海拔高度是对物种Shannon-Wiener指数影响最广泛的环境因子,湿度指数对混沟地区物种多样性影响不大。
3) a biodiversity
Shannon-Weiner指数
4) Shannon information index
Shannon信息指数
1.
The results showed that there were polymorphisms in the two markers, and there were great variations of the gene heterozygosity and Shannon information index in the two breeds.
结果表明,2个猪种在2个基因座均存在多态性,其基因杂合度和Shannon信息指数存在很大差异,而中外猪种的K88ab和K88ac受体基因也存在遗传差异,这2对引物可望作为K88ab和K88ac受体基因的遗传标记。
5) Shannon-Wiener diversity index
Shannon-Wiener多样性指数
6) Shannon index of genetic diversity
Shannon多样性指数
1.
The allele frequencies at each locus,genetic heterozygosity,Shannon index of genetic diversity had been calculated.
27%),计算了各座位在群体中的基因频率、杂合度和群体Shannon多样性指数等参数。
补充资料：迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中，}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100，如某一地区的值越大，反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂，则: }艺材。一芝Mj、}EIM汀艺。+乏M，(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二，么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中，M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I，j为迁移偏好指数。通过计算迁移偏好指数，可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如，专业技术人员的人数所占比重，各种文化程度人数所占比重等，以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中，M为迁移人数;M，为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
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