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意大利威尼托大区刺叶栎（Ｑｕｅｒｃｕｓｉｌｅｘ Ｌ．）林物种多样性指数和物种多度分布的研究表明：１．Ｍｅｎｈｉｎｉｃｋ 指数、Ｓｈａｎｎｏｎ 指数、Ｂｒｉｌｌｏｕｉｎ 指数、Ｓｉｍ ｐｓｏｎ 指数、Ｐｉｅｌｏｕ 均匀度指数、Ｂｒｉｌｌｏｕｉｎ 均匀度指数、ＰＩＥ的Ｖ 均匀度指数、ＰＩＥ的Ｖ均匀度指数和ＭｃＩｎｔｏｓｈ 均匀度指数较为适用。它们反映从加尔达湖区到ＦｏｃｉｄｅｌＴａｇｌｉａｍ ｅｎｔｏ、Ｂｏｓｃｏ Ｎｏｒｄｉｏ、ＣｏｌｌｉＥｕｇａｎｅｉ刺叶栎林的物种多样性指数依次降低。２． 几何分布最适用于威尼托的刺叶栎林的物种多度分布，Ｌｏｇ－ｎｏｒｍ ａｌ分布也较适合。物种多度分布模型反映在生物多样性上，其结果与物种多样性指数一致。３． 生物多样性并非绝对随群落演替的顺向发展而增加。在演替早期，由于无明显优势种，物种的优势度较低，物种多样性指数较高。随着演替的进行和优势度的增加，多样性变小。演替的进一步进行，由于群落结构的复杂及物种的增加，多样性又将随演替发展而增加
The study on species diversity and species abundance distribution of Quercusilex L. in the Veneto region of Italy showed that: 1. Menhinick index, Shannon index, Brillouin index, Sim pson index, Pielou evenness index, Brillouin evenness index, PIE V evenness index, PIE V evenness index and McIntosh evenness index are suitable. They reflect a decreasing order of species diversity from Lake Garda to Focidel Tagliam ento, Bosco Nordio, ColliEuganei Quercus splendens forest. 2. The geometric distribution is most suitable for the distribution of species abundance in the Quercus variabilis forest in the Veneto, and Log-norm al distribution is also suitable. Species abundance distribution model is reflected in biodiversity, the result of which is consistent with species diversity index. 3. Biodiversity does not absolutely increase with the forward development of community succession. In the early succession stage, the dominant species had lower dominance and higher species diversity index because of no obvious dominant species. As succession progresses and dominance increases, diversity diminishes. The succession of succession, due to the complexity of community structure and the increase of species, will in turn increase with the development of succession