摘要
分析了陕北桥山林区天然油松林群落的结构特征，结果表明：群落植物组成成分在５９种以上；物种多样性较为丰富，多样性指数以乔木层最低，灌木层最高；植物区系以北温带的种类占绝对优势，旧世界温带、东亚、泛热带等成分明显较少；乔木层集中了群落生物量和生产力的９８％以上。
The structural characteristics of communities of natural Pinus tabulaeformis forest in the Qiao Mountain in North Shaanxi were analyzed.The results showed that the commponents of the community were more than 59 species; the species divisity was relatively abundant;the index of diversity was the highest in the shurb layer and the lowest in the tree layers, the flora elements mainly consisted of species from north temperateca zone and some from the old world temperate, the East Asia and pantropic ones;the productivity and biomass in the tree layer took more than 98% of those in the whole community.
出处
《西北林学院学报》
CSCD
北大核心
1998年第3期14-17,共4页
Journal of Northwest Forestry University
关键词
多样性
生产力
油松林
群落结构
Chinese pine
structure
forest community
productivity
