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刘秀珍, 张峰, 张金屯. 管涔山撂荒地植物群落演替过程中物种多样性研究[J]. 植物科学学报, 2008, 26(4): 391-396.
引用本文: 刘秀珍, 张峰, 张金屯. 管涔山撂荒地植物群落演替过程中物种多样性研究[J]. 植物科学学报, 2008, 26(4): 391-396.
LIU Xiu-Zhen, ZHANG Feng, ZHANG Jin-Tun. Study on Species Diversity during the Succession of Plant Communities on Abandoned Farmlands in Guancen Mountains,Shanxi[J]. Plant Science Journal, 2008, 26(4): 391-396.
Citation: LIU Xiu-Zhen, ZHANG Feng, ZHANG Jin-Tun. Study on Species Diversity during the Succession of Plant Communities on Abandoned Farmlands in Guancen Mountains,Shanxi[J]. Plant Science Journal, 2008, 26(4): 391-396.

管涔山撂荒地植物群落演替过程中物种多样性研究

Study on Species Diversity during the Succession of Plant Communities on Abandoned Farmlands in Guancen Mountains,Shanxi

  • 摘要: 用TWINSPAN分类方法将管涔山撂荒地植物群落的演替过程划分为7群丛,分别属于植被演替的3个阶段——草本群落阶段、灌丛群落阶段和森林群落阶段。用物种多样性指数分析了物种丰富度、均匀度、多样性和优势度的变化规律,结果表明,随着演替时间的延长,物种丰富度和多样性有增加的趋势,优势度、均匀度有降低的趋势。用DCA排序分析植物群落的结构、组成和生活型在演替过程中的变化规律,表明随着群落环境条件的改善,群落内物种的组成发生了很明显的变化,最后发展为适应该区域环境条件的、以华北落叶松为建群种的、稳定的群落,结果显示群落内物种组成愈丰富,则多样性愈大。进一步用DCA排序分析物种多样性与海拔和时间之间的关系,表明随着海拔的升高和时间的延长,结论和前面一致——物种丰富度和多样性逐渐增加,优势度、均匀度逐渐降低。

     

    Abstract: The successive processes of plant communities were studied on abandoned farmlands in Guancen Mountain of Shanxi Province.Seven groups were divided by using TWINSPAN,representing seven associations and belonging to three vegetation succession stages separately—herbaceous communities stage,shrub communities stage and forest communities stage.The change regularity of the species richness,evenness,diversity and dominance were analyzed by using species diversity index.The results showed that the species richness and diversity were increasing,dominance and evenness were reducing with the succession time extending.The change regularity of composition,structure and life type of plant communities were analyzed by using DCA ordination.The results showed that the changes of plant communities were rapidness with environmental alteration during succession on abandoned farmlands and the forest community of Larix principis-rupprechtii turning into constructive species were formed in this area.It illustrated further that the richer species composition was,the higher species diversity was.The relationship of species diversity,elevation and abandoned time was analyzed further by using DCA,the conclusion was same with the foregoing tendency — species richness and diversity were increasing,dominance and evenness were reducing with elevation rising and the succession time extending.

     

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