确定关键种的模型

确定关键种的模型

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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

确定关键种的模型

    1)群落重要性指数CIi模型:


式中,tN为改变前群落或生态系统特征的定量测度;tD为物种i被去除后群落或生态系统特征的定量测度;pi为物种i被去除前在生态系统中的相对多度。

2)关键性指数模型:


式中,Ki)为物种i的关键性指数;Kbi)为种i上行关键性指数;Kbj)为种j上行关键性指数;mi)(j)为物种j的直接猎物种类数量;Kti)为种i下达关键性指数;Ktj)为种j下达关键性指数;ni)(j)为物种j的直接猎物种类数量。

3)功能重要性Ii模型:


式中,Pj,t=1Pj,t=0分别为第j个物种被去除后(t=1)和前(t=0)的生产力。

 

 

参考文献

    黄建辉,韩兴国:关键种,关键在哪里?植物生态学报,2001254

How to cite

《资源环境数学模型手册》 (2018). 确定关键种的模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/9d78b658-b882-4b1d-b8ca-391219691250
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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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