The Rich-Gini-Simpson quadratic index of biodiversity  

作　　者：Radu Cornel Guiasu Silviu Guiasu 

机构地区：[1]不详

出　　处：《Natural Science》2010年第10期1130-1137,共8页自然科学期刊（英文）

摘　　要：The Gini-Simpson quadratic index is a classic measure of diversity, widely used by ecologists. As shown recently, however, this index is not suitable for the measurement of beta diversity when the number of species is very large. The objective of this paper is to introduce the Rich- Gini-Simpson quadratic index which preserves all the qualities of the classic Gini-Simpson index but behaves very well even when the number of species is very large. The additive partitioning of species diversity using the Rich-Gini- Simpson quadratic index and an application from island biogeography are analyzed.The Gini-Simpson quadratic index is a classic measure of diversity, widely used by ecologists. As shown recently, however, this index is not suitable for the measurement of beta diversity when the number of species is very large. The objective of this paper is to introduce the Rich- Gini-Simpson quadratic index which preserves all the qualities of the classic Gini-Simpson index but behaves very well even when the number of species is very large. The additive partitioning of species diversity using the Rich-Gini- Simpson quadratic index and an application from island biogeography are analyzed.

关 键 词：Rich-Gini-Simpson INDEX of Species DIVERSITY Additive Partitioning of DIVERSITY Island BIOGEOGRAPHY BIODIVERSITY 

分 类 号：R73[医药卫生—肿瘤]