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夏儂指數是什麼東西??

誰能告訴我夏儂指數是啥麼??

1 Answer

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  • 茗堂
    Lv 4
    9 years ago
    Favorite Answer

    夏儂歧異度指數 (Shannon-Weaver)

    公式為Hsw = - Σ (Pi) × lnPi

    其中Pi為各物種之個體數佔總個體數之比例

    最早是用來評估一地區植物群聚的歧異度,現在已是是生態學家最愛用的式子,被廣泛應用於植物,藻類,水生昆蟲,微生物與一般環境影響評估中,理由是方便通用,比較能反映生態分布狀況。

    最早參考文獻:

    Shannon, C. E. and Weaver, W. 1949. The mathematical theory of communication, 1st ed. University of Illinois Press, Ubana.

    大概就是這樣.

    Source(s): 淡水生物多樣性調查方法與評估指標
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