雾灵山低山区油松林物种多样性初探

Preliminary Study on the Species Diversity of Pine Forest in Hilly Areas of Wuling Mountain

文章以河北省兴隆县雾灵山低山地区人工油松林为研究对象,采用植物群落样地调查法,对不同郁闭度的人工油松林样地灌木层和草本层群落的种类组成状况进行了观察和调查,并通过总优势度、Simpson指数、种间相遇概率等指标来探讨不同郁闭度下的油松林植物群落的物种多样性特点,以分析油松林郁闭度对其林下群落结构和物种丰富度的影响。结果表明在油松的郁闭作用下,林下灌木层植物密集,种类丰富,物种多样性高,而草本层植物稀疏,种类贫乏,物种多样性低;随着油松郁闭度的增加,灌木层物种多样性升高,草本层物种多样性有降低的趋势。

In this paper,pine forest in hilly areas of Wuling Mountain,Xinglong County,Hebei Province,was taken as a research object.Methods(plant samples of different pine forest by canopy density plots shrub layer and herb layer species composition of being observed,total dominance,Simpson index,the probability of interspecific encounter and other indicators to explore the different pine forest under the canopy density of species diversity of the communities) were used to investigate their pine forest canopy density community structure and species richness.The results showed that under the effect of pine in the canopy,understory shrub layer of plant was dense,various,and species were diverse.Whereas the herbaceous layer vegetation was sparse,species-poor,species diversity was low;with the pine canopy density increased,shrub species diversity increased,species diversity decreased.