多样性指数是生态学中的一个重要概念。它是把研究的生物群落内生物种的多少与各个种在群落内分布的均匀性结合在一起而形成的刻划群落内物种的丰富度及其均匀性的数量指标,能对群落的一个侧面起描述性作用。过去的二、三十年间生态学家们曾提出过许多多样性指数,其中种数对个体数之比,Simpson指数与Shannon指数是最常 Diversity index is an important concept in ecology. It is to study the number of species within the biome within the community and the uniformity of the various species in the community formed together to characterize the species richness and uniformity of the number of indicators of the community can one side Descriptive effect. In the past two or three decades ecologists have proposed many diversity indices, of which the ratio of species to individuals is the most common, and Simpson index and Shannon index are the most common