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万木林中亚热带常绿阔叶林物种多样性林隙梯度变化

闫淑君1;洪伟2;洪滔2;吴承祯2   

  1. 1福建农林大学园艺学院,福州 350002; 2福建农林大学林学院, 福州 350002
  • 收稿日期:2005-05-31 修回日期:2006-02-10 出版日期:2006-05-18 发布日期:2006-05-18

Changes of species diversity in gap gradient of mid-subtropical evergreen broad-leaved forest in Wanmulin Forest

YAN Shujun1;HONG Wei2;HONG Tao2;WU Chengzhen2   

  1. 1College of Horticulture,Fujian Agriculture and Forestry University,Fuzhou 350002,China; 2 College of Forestry,Fujian Agriculture and Forestry Universit
    y,Fuzhou 350002,China
  • Received:2005-05-31 Revised:2006-02-10 Online:2006-05-18 Published:2006-05-18

摘要: 根据万木林中亚热带常绿阔叶林林隙内外物种的调查数据,研究了林隙各区物种多样性的梯度变化及物种多样性随林隙级的梯度变化.结果表明,从林隙中心区到非林隙区,物种丰富度指数和物种多样性指数逐渐降低;生态优势度呈中间高、两端低的变化趋势;均匀度呈中间低、两端高的变化趋势.林隙各区的物种多样性在林隙面积为200~300 m2时均达到最大.

关键词: 小麦幼苗, Zn, Cd, 元素吸收

Abstract: Based on the investigation of gap and non-gap stands in the midsubtropical evergreen broad-leaved forest in Wanmulin Nature Reserve of Fujian Province,this paper studied the changes of species diversity in gap gradient and in gaps with different sizes.The results showed that the species richness and diversity decreased gradually from gap center to nongap,ecological dominance was higher in center and lower in edges,and species evenness was in adverse to ecological dominance.The species diversity in all areas of gap was the maximum when the gap size was 200~300 m2.

Key words: Wheat seedlings, Zn, Cd, Element uptake