滇中地区华山松天然次生林与人工林群落特征比较

Comparison of Community Characteristics of Pinus armandii between Natural Secondary Forest and Artificial Forest in Middle Yunnan Area

【目的】探究滇中地区华山松天然次生林与人工林群落特征。【方法】采用样地调查法及相关分析法对磨盘山国家森林公园的华山松群落进行对比。【结果】(1)磨盘山华山松群落共出现维管束植物22科28属29种,人工林群落与天然次生林群落的相似系数为0.31;(2)华山松天然次生林群落的乔木层和灌木层的植物多样性与人工林群落差异不明显,除二者乔木层的Simpsom指数相同和华山松天然次生林灌木层的Pielou指数大于人工林外,其他指数表现为华山松人工林群落>天然次生林群落;(3)在水平分布格局上,天然次生林的集群程度高于人工林;在垂直分布格局上,人工林的树高多样性高于天然次生林。【结论】磨盘山华山松人工林群落的植物多样性高于天然次生林;在水平分布格局上,天然次生林的集群程度高于人工林;在垂直分布格局上,人工林的树高多样性高于天然次生林。

【Objective】The study aims to explore community characteristics of Pinus armandii natural secondary forest and artificial forest in Middle Yunnan area,【Method】The transect method and correlation analysis were used to investigate armandii community in Mopan Mountain National Forest Park. 【Result】The results showed that( i) There were 28 genera,22 families and,29 species of vascular plants in cooccur Mopan Mountain armandii community,and artificial forest and natural secondary forest communities similar coefficient were 0. 31;( ii) The cluster degree were not significant difference between arbor layer and shrub layer of armandii natural secondary forest and artificial forest; In addition to the same Simpson index between arbor layer in natural secondary forest and artificial forest,the Pielou index of shrub layer in natural secondary forest was higher than that of shrub layer in artificial forest,the other index of armandii plantation community were higher than that of natural secondary forest communities;( iii) In the horizontal distribution pattern,the cluster level of the natural secondary forest was higher than that of artificial forest. In the vertical distribution patterns,Tree height diversity of artificial forest was higher than that of natural secondary forest. 【Conclusion】Mopan Mountain armandii and armandii artificial forest community plant diversity is higher than that of natural secondary forest; in the horizontal distribution pattern,cluster degree of natural forest is higher than that of artificial forest; in the vertical distribution pattern,artificial forest arbor height diversity is higher than that of natural forest.