Compute the Shannon diversity index for species communities.
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Shannon index | H' = −Σ p_i ln p_i | Shannon 1948 |
| Simpson index | D = 1 − Σp_i² | Simpson 1949 |
| Pielou evenness | J' = H'/ln S | Pielou 1966 |
| Margalef index | d = (S−1)/ln N | Margalef 1958 |
| Interpretation | H' 1.5–3.5 typical, >3 high | Ecological practice |
| Survey standard | Biodiversity observation guideline | HJ 710-2014 |
生物多样性 Shannon 指数计算工具,输入各物种个体数,一键计算 Shannon-Wiener 多样性指数、Pielou 均匀度、Simpson 优势度和 Margalef 丰富度指数,适用于群落生态学研究。