山西历山千金榆群落物种多样性研究

在野外调查的基础上，应用Patric丰富度指数（R₀）、Simpson指数（λ）和Shannon-Wiener多样性指数（H'）、Pielou均匀度指数（E₁）和Alatalo均匀度指数（E₅）等对山西历山千金榆群落物种多样性进行了分析研究。结果表明：（1）千金榆群落R₀、H'、E₁和E₅等多样性指数变化趋势基本一致，λ与H'等指数变化趋势相反；综合考虑：千金榆群落的物种多样性顺序为群丛Ⅰ（千金榆-山胡椒-糙苏群丛） > 群丛Ⅲ（千金榆-连翘-糙苏群丛） > 群丛Ⅳ（千金榆-土庄绣线菊+连翘-鹿药群丛） > 群丛Ⅶ（千金榆-接骨木-贝加尔唐松草+淫羊藿群丛） > 群丛Ⅱ（千金榆-小花溲疏-糙苏群丛） > 群丛Ⅵ（千金榆-小花溲疏-香根芹群丛） > 群丛Ⅴ（千金榆-小花溲疏-鹿药群丛）；（2）乔木层多样性与灌木层多样性、草本层多样性呈负相关（P<0.05），而灌木层多样性与草本层的多样性相关不显著（P>0.05）；（3）千金榆各群丛间多样性指数差异不显著。

Species Diversity of Carpinus cordata Communities in Lishan Nature Reserve,Shanxi Province

With the dataset in the investigated field, we studied the species diversity of Carpinus cordata communities in Lishan Nature Reserve, Shanxi Province by using Patric index(R₀), Simpson index(λ), Shannon-Wiener index(H'), Pielou index(E₁) and Alatalo index(E₅). The change trends of R₀, H', E₁ and E₂ was almost similarity, and the change trends of λ with H' was positive. Overall, the rank of species diversity indices of C.cordata communities was Ass. Ⅰ Carpinus cordata-Lindera glauca-Phlomis umbrosa > Ass. Ⅲ Carpinus cordata-Forsythia suspense-Phlomis umbrosa > Ass. Ⅳ Carpinus cordata-Spiraea pubescens+Forsythia suspense-Smilacina japonica > Ass. Ⅶ Carpinus cordata-Sambucus williamsii-Thalictrum baicalense+Epimedium brevicornu > Ass. Ⅱ Carpinus cordata-Deutzia parviflora-Phlomis umbrosa > Ass. Ⅵ Carpinus cordata-Deutzia parviflora-Osmorhiza aristata > Ass. Ⅴ Carpinus cordata-Deutzia parviflora-Smilacina japonica. The diversity indices between the tree layer and shrub layer was negative correlation(P<0.05),and the diversity indices between the tree layer and herb layer was negative correlation(P<0.05) also, moreover, the diversity indices between the tree layer and herb layer was negative correlation(P>0.05). The differences among those associations of the C.cordata communities was not significant(P>0.05).