根据对徐州泉山自然保护区石灰岩山地3种不同经营强度的侧柏人工林群落的分层调查，利用丰富度指数、Simpson指数、Shannonwiener指数和Pielou均匀度指数等物种多样性指数对3种群落的植物多样性进行了比较分析。结果表明：强度经营型的泉山植被群落多样性最高，并且优势种已由侧柏变成了刺槐，其重要值为44.28，而侧柏的重要值仅为23.59；中度经营型的云龙山侧柏林群落多样性居中；而弱度经营型的小泰山侧柏林群落的多样性则远远低于前两类群落。在3类群落内部，不同层次间的多样性顺序从大到小均表现为：中层、下层、上层。

Oriental arborvitae (Platycladus orientalis Franco) plantation communities in Quanshan nature reserve, a typical limestone hill region in Xuzhou city, were surveyed with stratification method. Species biodiversity of plantation communities under three different management intensities were calculated, using Patrick，Simpson, Shannonwiener and Pielou indexes. Results showed that the region with high strength management has the highest plant diversity. The dominant species had naturally converted from oriental arborvitae community with an importance value of 23.59 to black locust (Robinia pseudoacacia Linn.) community, of which importance value was 44.28. In contrast, the lower plant diversity was found in Yunlongshan community with middle management intensity, and the lowest occurred in Xiaotaishan community with weak management intensity. In addition, the plant diversities in different stratification took on an increasing trend from top and ground layers to middle layer for each community.