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西藏冷杉原始林群落物种多样性初步研究

Primary Study on Species Diversity of Community of Abies georgei Virgin Forest in Tibet.

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【作者】 任青山

【Author】 Ren Qingshan(Northeast Forestry University,Harbin 150040).

【机构】 东北林业大学 哈尔滨150040

【Abstract】 Species diversity of shrubs and herb under virgin forests of Abies georgei in Sejila Mountains of southeastern Tibet was measured quantitatively and analyzed by the investigating method of typical plot, three α diversity and two β diversity respectively.The results indicated that α and β diversities had the same law.With the increase of altitude,the species richness,evenness and diversity indices declined.The species distribution and number of shrubs and herb under forests had apparently changed.The similarity of community got more and more small.Abies georgei forests took on open distribution near the timberline,R.nivale and R.nyingchiesse were mainly dominant species of shrubs,and then C.fastigiata and R.yunnanensis were dominant species of herb.This distribution results in obvious characteristics of ecotone.The use of Motyka β diversity indices could much more reflect accurately the characteristics of mutual influence between the change of altitude gradients and species substituation.

【基金】 国家自然科学基金项目 ( 39970 5 93);西藏自治区科技厅资助
  • 【文献出处】 生态学杂志 ,Chinese Journal of Ecology , 编辑部邮箱 ,2002年02期
  • 【分类号】S718
  • 【被引频次】39
  • 【下载频次】204
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