摘要
本文用样方法对济南市千佛山北坡侧柏林的种群和群落特征进行了系统研究。发现林下灌木和草本种均呈集群分布。灌木层具有较高的植物多样性、均匀度和较小的生态优势度,草本层则正相反。各环境因子对植物多样性的影响正负不一,且均不显著。在光照强度、土壤水分和土壤有机质三维资源轴上对物种资源选择性和生态位重叠的计测表明,多数种对在土壤有机质和土壤水分资源轴上重叠较大,同一资源轴上灌木种对间的重叠值较草本种对间的重叠值大。
The population and community characteristics in the Platycladus orientalis forest on Qianfo Mountain in Jinan are studied.The specific composition,spatial pattern,biological spectrum and main species dispersions are reported.It is found that all the main species dispersions are aggregated.The diversity of Shannon-Wiener and Simpson indexes are markedly not correla- ted with the habitat factors.The patch indexes and niche breadths of the main species have been analysed on such axes as light,soil water and soil organic matter.The value of niche overlap between every two species is high on soil resource axis.
关键词
侧柏林
种群
群落
Platycladus orientalis forest
Population
Community
