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单词 Diversity indices
释义

Diversity indices

英语例句库

The community has an outstanding dominant species and the arborous layer possesses a comparatively high diversity index.

群落的优势种显著,乔木层的物种多样性指数较高,各样地间的植物种类具有一定的相似性。

The community has an outstanding dominant species and the arborous layer possesses a comparatively high diversity index.The similarity is rather striking among different quadrats species.

在浙江省天台山主峰华顶山北侧的狮子岩坑处,沿山沟两侧呈带状分布的有一片以七子花为优势的群落,实为罕见。

中文百科

多样性指数 Diversity index

(重定向自Diversity indices)

多样性指数是用来描述一个群落的多样性的统计量。在生态学中,它被用来描述生态系统中的生物多样性,在经济学中可以用来描述一个地区中经济活动的分布。多样性指数经常被用来估算任何一个群落,每个成员都属于一个独特的群体或物种。在很多情况下,多样性指数的估计量是有偏的,因此相似的值之间往往不能直接比较。

一些常用多样性指数将讨论如下:

英语百科

Diversity index 多样性指数

(重定向自Diversity indices)

A diversity index is a quantitative measure that reflects how many different types (such as species) there are in a dataset, and simultaneously takes into account how evenly the basic entities (such as individuals) are distributed among those types. The value of a diversity index increases both when the number of types increases and when evenness increases. For a given number of types, the value of a diversity index is maximized when all types are equally abundant.

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更新时间:2025/6/18 7:03:54