北京林业大学学报2011，Vol.33Issue(3)：57-63,7.
北京低山油松人工林径阶结构及林下植物多样性特征
Diameter structure and understory diversity in Chinese pine plantations in Beijing iow mountain areas.
摘要
Abstract
In order to examine the basic site conditions needed for the normal growth of Chinese pine plantations and maintenance of high biodiversity, 97 plots of Chinese pine plantations and 134 shrub-herb sub-plots were established in the Beijing low mountain areas. The diameter of pine trees and species diversity were measured under four different site conditions. The results showed that diameter structure of Chinese pine plantations showed a normal distribution at the north and northeast slopes with deep soils,while the reverse J-shaped diameter distributions appeared in the other three site conditions, i.e. north and northeast slopes with shallow soils, south and southwest slopes with deep or shallow soils. Plant species diversity was high under the canopy of Chinese pine plantations; there were 63 species, including 33 shrub species and 30 herbaceous species. Overall, species richness at the north and northeast slopes were significantly higher than those at the south and southwest slopes. The dominant species in the shrub layer were Grewia biloba var. parviflora and Vitex negundo var. heterophylla, while those in the herb layer were Rubia cordifolia, Oplismenus undulatifolius, Leonuru japonicus and Arthraxon hispidus. The Patrick index, Simpson index, Shannon-Wiener index and Alatalo index of the understory vegetation were higher in the Chinese pine plantations at north and northeast slopes with deep soils than in the other sites investigated.关键词
油松人工林/径阶结构/物种多样性Key words
Chinese pine plantation/ diameter structure/ species diversity分类
农业科技引用本文复制引用
刘平,马履一,贾黎明,王玉涛,王嫣斐..北京低山油松人工林径阶结构及林下植物多样性特征[J].北京林业大学学报,2011,33(3):57-63,7.基金项目
国家自然科学基金项目(31000300)、辽宁省教育厅项目(L2010504)、沈阳农业大学校青年基金(20070206). （31000300）
