生态与农村环境学报 ›› 2009, Vol. 25 ›› Issue (2): 20-24.doi: CNKI:SUN:NCST.0.2009-02-005

• 论文 • 上一篇    下一篇

人工马褂木林下草本植物物种多样性与林分郁闭度的关系

李双喜, 朱建军, 张银龙, 叶正文, 黄启忠, 高君辉   

  1. 上海市农业科学院林木果树研究所
  • 收稿日期:2008-12-23 出版日期:2009-04-25 发布日期:2011-04-08
  • 通讯作者: 朱建军 上海市农业科学院林木果树研究所 E-mail:zhujianjun@saas.sh.cn
  • 作者简介:李双喜(1986-),男,河南洛阳人,硕士生,主要从事环境生态学方面的研究。E-mail:ly6083583@yahoo.com.cn
  • 基金资助:

    上海市科委“科技创新行动计划”项目(07dz19601)

Diversity of Understory Herbaceous Species and Canopy Density of Liriodendron chinense Stand

LI  Shuang-Xi, ZHU  Jian-Jun, ZHANG  Yin-Long, YE  Zheng-Wen, HUANG  Qi-Zhong, GAO  Jun-Hui   

  1. Forest and Fruit Tree Research Institute,Shanghai Academy of Agriculture Sciences
  • Received:2008-12-23 Online:2009-04-25 Published:2011-04-08
  • Contact: ZHU Jian-Jun Forest and Fruit Tree Research Institute,Shanghai Academy of Agriculture Sciences E-mail:zhujianjun@saas.sh.cn

摘要: 通过对崇明岛5年生人工马褂木林下草本植物分布及生长状况的调查,研究了不同郁闭度下草本植物物种多样性与林分郁闭度的关系。结果表明:在马褂木幼龄林中,随着林分郁闭度的增大,林下草本植物种数呈先增加后减少的趋势,郁闭度为0、(0,0.2]、(0.2,0.4]、(0.4,0.6]、(0.6,0.8]、(0.8,1.0]下的草本植物种数分别为16、16、19、15、9和7种;林下草本植物的平均盖度、平均密度与林分郁闭度在α=0.01水平上呈显著负相关(r盖度-郁闭度=-0.9643,r密度-郁闭度=-0.9815);林分郁闭度为(0.2,0.4]林下草本植物多样性指数最高,其中辛普森指数为0.7548,香农-威纳指数为1.3273,均匀度指数为0.8806。

关键词: 郁闭度, 幼龄林, 林下草本植物, 物种多样性, 马褂木

Abstract: Species,mean coverage,mean density and α-diversity index of the understory herbaceous plants were investigated in five-year-old Liriodendron chinense forest stands different in canopy density in Chongming Island of Shanghai.Results show that with canopy density increasing from 0,(0,0.2],(0.2,0.4],(0.4,0.6],(0.6,0.8] and(0.8,1.0],the number of understory herbaceous plant species displayed a rising-and-then-falling trend,like 16,16,19,15,9 and 7.Significant negative correlations were observed between the canopy density and the mean coverage of herbaceous plants(r=-0.964 3,P<0.01)and the mean density of herbaceous plants(r=-0.981 5,P<0.01)as well.The Simpson index,Shannon-Weiner index,and Pielou index peaked when the canopy density was(0.2,0.4],being 0.754 8,1.327 3,and 0.880 6,respectively.

Key words: canopy density, young stand, understory herbaceous plant, species diversity, Liriodendron chinense

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