分类学差异指数

分类学差异指数

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Initial contribute: 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Method-focused categoriesProcess-perspectivePhysical process calculation

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Chinese {{currentDetailLanguage}} Chinese

分类学差异指数

(1)   分类学差异(  1995)被定义为:

 

式中,  表示第 物种的丰富度; 是样本中个体的总数; 是在等级分类中连接物种  的路径长度的“差异权重”。两次求和包含了物种  的所有配对。

(2)   当忽略分类学层次时, 简化成 多样性的形式:

 

式中, 

(3)   分类学差异的代数定义:

 

(4)   一个特例是对每一物种仅使用“存在/缺乏”的嘻嘻,因而分类学差异为:

 

式中, 是指在 物种中存在  的物种数量。

 

参考文献:

   Clarke K R,Warwick R M:分类学差异指数及其统计学属性。The Journal of Applied Ecology,1998,35

How to Cite

《资源环境数学模型手册》 (2018). 分类学差异指数, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/b3df454d-2cc0-405b-9080-426dde4191e9
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Contributor

Initial contribute: 2018-12-04

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Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feedback

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Last modifier : 
YY
Last modify time : 
2020-10-27
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