太行山黄连木天然群落物种多样性的研究

Study on species diversity of Pistacia chinensis natural communities in Taihang Mout.

通过对黄连木集中分布区群落物种多样性研究表明:太行山区黄连木群落乔木树种构成简单,黄连木的重要值高达73.1931,形成黄连木主的单优群落。植物生长型与群落多样性的关系为,灌木层与草本层物种丰富度相近且明显高于乔木层,物种多样性指数表现出灌木层>草本层>乔木层的规律,均匀度表现出与多样性指数相同的变化趋势。太行山北段、中段和南段3个区域各层物种多样性指数变化趋势各不相同,表现出明显的分异现象。

The species diversity ofPistacia chinensis natural communities were studied in Taihang Mout. Region. The results show that P. chinensis community had a simple tree stratum component, the important value of Chinese pistache was up to 73.1931, so Chinese pistache-gifted community formed; The species richness and evenness of shrub stratum and herb stratum were similar which were obviously higher than tree stratum. The diversity index for different strata were in the following order： shrub stratum〉 herb stratum〉 tree stratum; the evenness had the same trend as the species diversity indices. The species diversity indexes of different regions had different variable trends, showing clear differentiation phenomenon.