【摘要】 湖南平江幕阜山海拔 95 0m以上山地分布着大片的黄山松林 ,是当地主要的森林群落类型。通过对不同海拔、坡度、坡向的黄山松群落样地调查 ,统计出群落灌木层和草本层的重要值 ;绘制出黄山松种群胸径 — 株数关系图和树高 — 株数关系图。研究结果表明 ,群落中约有种子植物 4 0科 ,6 6属 ,70种 ;群落的乔木层为纯林 ,灌木层树种的海拔分布差异明显 ,和草本层一起多数为耐荫植物 ;群落正向着稳定群落的方向发展 ,最后随着落叶阔叶树的发展 ,将会被落叶阔叶林取代。其演替规律为 :裸地或瘠薄空旷地→黄山松林→黄山松 +落叶阔叶树混交林→落叶阔叶林→常绿阔叶林。更多还原

【Abstract】 Pinus taiwanensis forest is the dominating community,distributing in the Mufu Mount over 950?m in elevation in Pingjiang county in Hunan province. Based on investigation of the sample fields that are selected from different elevation,slope-degree and slope-forward. The important values of shrubbery layer and herbage layer are caculated and analyzed; diameter-number and height-number of Pinus taiwanensis population are figured out as a result of community investigation. From above,we can conclude that there are about 70 species of spermatophyte,66 genuses,40 families in this community. The layer of arbor is absolute Pinus taiwanensis. In elevation the distributuion of species of shrubbery is obvious,and they are plants that can endre shade,and the species of herbage as well. The structure of community is becoming stable. With the increasing of the species of hardwood and broadleaf,the community of Pinus taiwanensis will be replaced by hardwood community. The law of succession is nake terra or barren and void terra?→?Pinus taiwanensis community?→?Mix forest of Pinus taiwanensis+hardwood and broadleaf?→?Hardwood and broadleaf forest?→?Evergreen brosdleaf forest.更多还原