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草海国家级自然保护区华山松群落特征及物种多样性研究
何斌1, 李青1, 刘勇2
1.贵州省普通高等学校生物资源开发与生态修复特色重点实验室, 贵州工程应用技术学院生态工程学院, 贵州 毕节 551700;2.北京林业大学林学院, 省部共建森林培育与保护教育部重点实验室, 北京 100083
摘要:  为探讨喀斯特地区森林群落的演替动态和生物多样性维持机制,采用样地调查法对草海国家级自然保护区的华山松(Pinus armandii)群落的物种组成、植物区系特征、种群结构和物种多样性等进行了分析。结果表明,样地内共有种子植物37科69属81种,其中乔木11种、灌木32种、草本38种;群落内植物的科、属区系成分类型多样,以温带成分为主;生活型谱主要以高位芽植物(46.91%)和地面芽植物(27.16%)为主;乔木层华山松的重要值达58%,为群落的单优势种;径级结构呈左偏正态型分布,树高分布集中在12~21 m,冠幅分布呈V型;乔木层与灌木层、草本层间的多样性差异显著(P<0.05),物种丰富度指数S和DM、多样性指数H和DS均为草本层 > 灌木层 > 乔木层,物种均匀度指数J为灌木层 > 草本层 > 乔木层。因此,草海国家级自然保护区内的华山松群落特征和物种多样性具有明显的地域特点。
关键词:  华山松  群落特征  物种多样性  草海国家级自然保护区
DOI:10.11926/jtsb.4063
分类号:
基金项目:贵州省科技合作计划项目(黔科合LH字[2015]7591);贵州省普通高等学校科技拔尖人才支持计划项目(黔教合KY字[2016]099);贵州省重点学科生态学项目(黔学位合字ZDXK[2013]11)资助
Community Characteristics and Species Diversity of Pinus armandii in Caohai National Nature Reserve
HE Bin1, LI Qing1, LIU Yong2
1.Key Laboratory of Biological Resources and Ecological Remediation of Guizhou Province, College of Ecological Engineering, Guizhou University of Engineering Science, Bijie 551700, Guizhou, China;2.College of Forestry, Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
Abstract:  In order to understand the succession dynamics and biodiversity maintenance mechanism of forest community in karst area, the species composition, flora characteristics, species diversity and population structure of Pinus armandii forest in Caohai National Nature Reserve by using sample-plot survey. The results showed that there were 81 species of seed plants, belonging to 21 families and 39 genera, including 11 species of trees, 32 species of shrubs and 38 species of herbs. The floristic type of families and genera was complex mainly composed by temperate element. The main life-form spectrum was dominated by phanerophytes (46.91%) and hemicryp-tophyte (27.16%). Pinus armandii was the single dominant species with importance value of 58%; the diameter structure was a skewed normal distribution (left-biased type), and the distribution of tree height was focused on 12-21 m, and the distribution of e crown was V type. There was a significant difference in the diversity between tree layer with shrub layer and herb layer. The species richness indexes, S and DM, and diversity indexes, H and DS, were in the order of herbaceous layer > shrub layer > tree layer, and the evenness index (J) was shrub layer > herb layer > tree layer. So, the characteristics of P. armandii community and species diversity in Caohai National Nature Reserve have obvious regional features.
Key words:  Pinus armandii  Community characteristics  Species diversity  Caohai National Nature Reserve

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