摘要
以贵州雷公山秃杉林为研究对象,应用系统的群落学调查法对秃杉群落进行调查,分析其群落特征,对调查群落所处的环境因子进行Pearson相关系数分析和DCA分析。结果表明,①秃杉群落乔木层重要值在4.4%以上的物种有27种,乔木层按5m一层划分可分为9层,秃杉为群落的建群种或共优种,占据乔木层的第一层;②秃杉种群更新主要受乔木层结构(包括秃杉大树)、乔木层郁闭度和枯枝落叶层厚度的影响;③土层厚度与Ⅰ、Ⅱ级秃杉幼苗呈负相关关系,与其他各级秃杉相关性不大,土壤含水量对各级秃杉的影响也不大;④秃杉种群应以就地保护为主,适当间伐乔木层和灌木层的非目的树种,从而为秃杉种群的更新创造良好地条件。
The Taiwania flousiana population in Leigong mountain of Guizhou province was regarded as the research object. The community investigation is used to analyze the community features of the T. flousiana pupolation. In addition, the environment factors were also analyzed in two aspects, the Pearson correlation coefficient and DCA. The result showed： （1）there were 27 species of trees with important value above 4.4 %. The tree layer could be divided into 9 layers with each layer of 5 m; and the T. flousiana pupolation was in the first layer; （2）the regeneration of the T. flousiana population was influenced by three factors, the structure of the tree layer, the crown density of the tree layer and the thickness of forest floor; （3）the correlation between the thickness of soil and the first and second seedlings was negative and the correlation for other classes of seedlings were not significant. However, it depended on the environment; （4）the T. flousiana population should be protected in their original place. The tree layer and the shrub layer should be cut down in proper time in order to create a perfect condition for the T. flousiana population.
出处
《湖北农业科学》
北大核心
2009年第3期649-652,共4页
Hubei Agricultural Sciences
基金
贵州省教育厅青年教师基金项目(2005225)
凯里学院<植物学>重点学科建设资助项目
关键词
秃杉种群
径级结构
重要值
环境因子
Taiwania flousiana pupolation
pupolation＇s structure
importance values
environment factors
