木兰围场林管局华北落叶松人工林林下植物多样性研究  

Research on the understory vegetation diversity of Larix principis-rupprechii plantation

作　　者：剪文灏[1] 肖志军[1] 黄永辉[1] 

机构地区：[1]河北木兰围场国有林场管理局,河北围场068450

出　　处：《河北林果研究》2013年第1期44-48,共5页Hebei Journal of Forestry and Orchard Research

摘　　要：对河北省木兰围场林管局北沟林场的华北落叶松人工林林下植被物种组成和群落特征进行了调查和研究,结果表明,不同年龄华北落叶松人工林中,35年生华北落叶松人工林林下植物丰富度较高,有利于林下植被发育和群落结构改善;灌木层的多花胡枝子和土庄绣线菊,草本层的繁缕、糙苏、升麻和歪头菜在不同的群落演替阶段占据重要地位;灌木层Simpson指数和不均匀度指数在林龄梯度上的变化趋势基本一致,均为23年生林分稍大。In this research, the plant species composition and community feature of understo- ry vegetation of Larix principis-rupprechii plantation at Beigou forestry centre, Mengluan- weichang Fortestry Administration, Hebei, China were investigated and analyzed. Results showed that, among the various aged larch plantations, the 35 year-old plantation revealed higher abundance which is beneficial to the vegetation growth and community improvement. In shrub layer, Saussurea pectinata , Agrimonia pilosa, Polygonatum humile played impor- tant roles in community succession. In shrub layer, the Simpson index and the uniformity in- dex of forest age gradient were consistent with the trend, they were both larger in 23 year- old stands, and smaller in the other two stands.

关 键 词：华北落叶松 植被多样性 林龄 

分 类 号：S718.5[农业科学—林学]