结合指数

结合指数

  17

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Geography SubjectPhysical GeographyEcosystem

Detailed Description

结合指数

 

(1)联结指数𝐴𝑖

 (2)𝑋2统计量:

(3)点相关系数𝑅𝑝

(4)点相关系数𝑅𝑖,𝑛

式中,𝑎是含有𝐴,𝐵两个种的样方数;𝑏为不含𝐴种只含𝐵种的样方数;𝑐为只含𝐴种不含𝐵种的样方数;𝑑为既不含𝐴种又不含𝐵种的样方数;为样方总数;𝑋𝑘𝑌𝑘分别为第𝑘样方中物种𝐴和物种𝐵的重要性指标;分别为𝑋𝑘𝑌𝑘的平均值。

 

参考文献

明春,党承林:云南鸡足山元江群落和高山群落的植物种间结合研究。生态学报,1998,18(2)

 

How to cite

《资源环境数学模型手册》 (2018). 结合指数, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/aa8c62d1-9c58-4f54-80b4-96ba3cc1094b
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Contributor

contributed at 2018-12-04

Authorship

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

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