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应用生态学报 ›› 2005, Vol. 16 ›› Issue (5): 815-819.

• 研究论文 • 上一篇    下一篇

浙江天童常绿阔叶林栲树种子雨的时空格局

胡星明, 蔡永立, 李恺, 张天澍   

  1. 华东师范大学城市化生态过程与生态恢复上海市重点实验室, 上海 200062
  • 收稿日期:2004-03-29 修回日期:2004-07-02 出版日期:2005-05-15 发布日期:2005-05-15
  • 通讯作者: 蔡永立,Tel:021-62238101;E-mail:ylcai@geo.ecnu.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(30130060)和上海市生态学重点学科资助项目.

Spatial and temporal pattern of Castanopsis fargesii seed rain in evergreen broad-leaved forest in Tiantong National Forest Park of Zhejiang,China

  1. Shanghai Municipal Key Laboratory of Urbanization Ecological Process and Ecological Restoration, East China Normal University, Shanghai 200062, China
  • Received:2004-03-29 Revised:2004-07-02 Online:2005-05-15 Published:2005-05-15

摘要: 在浙江天童常绿阔叶林中选择5株栲树,通过种子筐和地表取样,分析了栲树种子雨的时空格局特征.结果表明,栲树种子雨从11月3日到12月16日,持续45d,存在散落的高峰期(11月18日~27日);散落在地表的种子雨主要集中在离母株树干1.5~5.5m区段内,占总数的85.6%,最远不超过8m,空间格局符合二次分布;整个种子雨期间,单株平均落果数为112.8个·m-2(70个·m-2~239.5个·m-2),东南向较多(135.6个·m-2)、西北向较少(86.8个·m-2),但无显著差异;种子雨中有活力的坚果占总数的27.3%、未成熟的占25.7%,昆虫幼虫侵害的占42%,松鼠啃食的占5%.

关键词: 亚热带常绿阔叶林, 栲树, 种子雨, 时空格局

Abstract: Five mature plants of Castanopsis fargesii population were randomly chosen to study the spatial and temporal pattern of its seed rain in Tiantong National Forest Park,Zhejiang Province in 2003.The duration of seed rain observed from the five samples was about 45 days,from November 3rd to December 16th,with a distinguishable dropping peak between November 18th and 27th.The average seed rain density estimated from the traps deployed under the crown was 112.8 seeds穖-2,ranging from 70 to 239.5 seeds穖-2.Of the total acorns collected by seed traps,the viable accounted for 27.3%,the immature 25.7%,the eaten by rodents 5.0%,and the infected by larvae 42.0%.The acorns on the ground mainly distributed under the parent tree crown within 8 m from the trunk,and the spatial pattern of seed density on the ground fitted the quadratic distribution.

Key words: Subtropical evergreen broad-leaved forest, Castanopsis fargesii, Seed rain, Spatial and temporal pattern

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