【摘要】 以章古台35年生樟子松2种密度人工林的生物群落调查为基础,对樟子松不同密度林分生物多样性特征进行了研究,结果表明:不同密度樟子松林分物种丰富度指数、均匀度指数、多样性指数、优势度指数草本层均大于灌木层;810株·hm-2林分和404株·hm-2林分相比较,灌木层丰富度指数、均匀度指数、多样性指数、优势度指数前者大于后者,草本层丰富度指数前者远大于后者,均匀度指数两者相当,多样性指数、优势度指数前者稍高于后者。林分内灌木物种种类在很大程度上取决于该地区原有植被的种类,2种密度林分固沙林均呈现出乔木灌木复层林景观。更多还原

【Abstract】 The characteristics of forest biodiversity with different densities were studied based on the biological community survey of 35-year-old Pinus sylvestris var.mongolica plantation with two kinds of densities planted in Zhanggutai Experimental Forest Farm.Result shows that richness index,evenness index,diversity index & dominance index of species with different kinds of densities are all higher in herbaceous layer than that in shrub layer.Stands of 810plants·hm-2 compared with stands of 404plants·hm-2,richness index,evenness index,diversity index,dominance index of shrub layer,the former is greater than that of the latter;richness index of herbaceous layer of the former is greater than that of latter;evenness index of both is equal;diversity index &dominance index of the former is slightly higher than that of the latter.Shrub species in the stand largely depend on the types of original vegetation in the region.Sandbreak forest with two kinds of densities appear landscape of multiple layered forests(arbor and shrub).更多还原