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通过对湘中丘陵区石栎（Ｌｉｔｈｏｃａｒｐｕｓｇｌａｂｅｒ（Ｔｈｕｎｂ．）Ｎａｋａｉ）混交林群落调查．利用Ｓｈａｎｎｏｎ和Ｓｉｍｐｓｏｎ多样性指数及相应的均匀度和种间相遇机率．对其群落物种的多样性进行了初步研究．结果表明：湘中丘陵区石栎混交林群落乔木层与下木层的Ｓｈａｎｎｏｎ多样性指数分别为１．１８４和３．１９７；Ｓｉｍｐｓｏｎ多样性指数分别为０．６２４和０．８１４；种间相遇机率分别为０．６２５和０．８１４；均匀度分别为４５．８０％和６３．９４％．乔木层第Ⅰ亚层多样性指数低于第Ⅱ亚层；群落的物种多样性是时间和空间的函数．
Through the investigation of mixed community of Lithocarpus glaber (Thunb.) Nakai in hilly area of Central Hunan Province. Using Shannon and Simpson diversity indices and their corresponding uniformity and probability of inter-specific encounters. A preliminary study of the diversity of its community species. The results showed that the Shannon’s diversity index of tree layer and understory layer in the Quercus voluttii mixed forest community in hilly area of Hunan Province were 1.184 and 3.197 respectively, and Simpson’s diversity index was 0.624 and 0.814 respectively. The odds were 0.625 and 0.814 respectively; the evenness was 45.80% and 63.94%, respectively. The diversity index of the first sub-layer in the arbor layer was lower than that in the second sub-layer. The species diversity of the community was a function of time and space.