山西历山千金榆群落物种多样性研究

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

在野外调查的基础上,应用Patric丰富度指数(R_0)、Simpson指数(λ)和Shannon-Wiener多样性指数(H')、Pielou均匀度指数(E_1)和Alatalo均匀度指数(E_5)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R_0、H'、E_1和E_5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。

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 （ A ）, 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 A 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 - Srnilacina japonica 〉 Ass. Ⅶ Carpinus cordata - Sambucus wiUiamsii - 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 ）.