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Simpson's diversity index is a measure of diversity which takes into account both richness and evenness. The final index, simpson's reciprocal index, can be calculated as 1/simpson's index, where 1 is the lowest value and the upper limit is infinite (figure 2). The simpson's reciprocal index, denoted as d, is a crucial measurement for assessing biodiversity by considering both species richness and evenness.
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The lowest value for this index is 1 and the highest value is equal to the number of species. The term 'simpson's diversity index' can actually refer to any one of 3. Simpson's reciprocal index： 1/d，用来表示生态系统的多样性。 这个指数的值从 1 开始，最大值为样本中的物种数。 simpson's diversity index不仅可以用于生态学研究，还可.
A value of simpson’s index of 0.7, is not the same as a value of 0.7 for simpson’s index of diversity.
Simpson’s index gives more weight to the more abundant species in a sample. We can also calculate simpson’s reciprocal index, which is calculated as 1/d.
