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采用重要值和α-多样性指数分析了湖北4个不同分布区夏枯草群落:蕲春县九棵松(QCX)、大别山区的罗田县骆驼坳(LTX)、鄂西北的襄阳市古隆中(XYX)和武汉东湖(WHX)的基本特征和物种多样性,结果表明:LTX的物种最丰富(17种,隶属15科16属),而XYX物种数目最低(7种,隶属6科7属);QCX的夏枯草重要值/相对重要值(IV/Pi)相对较高(0.20/0.19),LTX的夏枯草IV/Pi值最低(0.06/0.06);WHX与QCX、LTX之间的Shannon-Wiener多样性指数(H′)呈现显著性差异(p<0.05),WHX和LTX之间、QCX和LTX之间的均匀度指数(J)也存在差异性(p<0.05);而4个群落之间的生态优势度(SN)没有差异性(p=0.27>0.05);夏枯草密度与数目、相对重要值之间呈正相关(r分别为0.96和0.99,p<0.05),物种数目与H′之间也呈正相关(r=0.97,p<0.05).由此得出结论:生境差异和外界干扰影响夏枯草群落植物成分和结构.
Based on the important values and the α-diversity index, the community of Prunella vulgaris in four different distribution areas in Hubei Province was analyzed: Qixian Jiukesong (QCX), Luotian County camel depression (LTX) in Dabie Mountains, Gulong in Xiangyang (XYX) and WHX in Wuhan. The results showed that the species of LTX was the most abundant (17 species, belonging to 15 families and 16 genera) while the species of XYX was the lowest (7 species belonging to 6 genera and 7 genera ); The value of IV / Pi of Prunella vulgaris was higher (0.20 / 0.19) and the value of IV / Pi of Prunella vulgaris was the lowest (0.06 / 0.06) for QCX; Shannon between WHX and QCX, LTX Wiener diversity index (H ’) showed significant difference (p <0.05), WHX and LTX, the uniformity index (J) between QCX and LTX was also different (p <0.05) There was no significant difference in ecological dominance (SN) between communities (p = 0.27> 0.05). There was a positive correlation between the density and the number and relative importance of Prunella vulgaris (r = 0.96 and 0.99, p <0.05, respectively) (R = 0.97, p <0.05) .Therefore, it was concluded that the differences of habitat and external disturbances affected plant components and structure of Prunella vulgaris community.