植物生态学报 ›› 2001, Vol. 25 ›› Issue (3): 276-282.

• 论文 • 上一篇    下一篇

三峡大老岭地区山地常绿落叶阔叶混交林林隙干扰研究 I. 林隙基本特征

沈泽昊,李道兴,王功芳   

  • 发布日期:2001-03-10
  • 通讯作者: 沈泽昊

Studies on the Gap Characteristics of Mixed Evergreen and Broad-Leaved Deciduous Forests at Dalaoling Mountain in the Three Gorges Region

SHEN Ze-HaoLI Dao-Xing And WANG Gong-Fang   

  • Published:2001-03-10
  • Contact: SHEN Ze-HaoLI Dao-Xing

摘要: 为探讨我国亚热带山地常绿落叶阔叶混交林的林隙干扰特征,对三峡大老岭地区这一植被类型进行调查,分析了植被中林隙的数量、类型及成因;林隙形成木(GM)的类型、数量、物种构成和径级结构,以及林隙和GM的多尺度空间格局特征。结果表明:1)林隙密度为11.7个·hm-2;冠林隙和扩展林隙分别占森林面积的11.09%和27.06%。平均每个林窗的形成木为4.5株;单株GM形成的林隙只占17.46%,其中翻倒木集群性最强。对林隙形成的贡献大小次序是:翻倒木>折干>枯立>折枝。2)林隙成因方面:冬雪和春、秋冻雨的影响最大

Abstract: This paper aims to explore the characteristics of gap disturbances in mixed evergreen/deciduous mountain forests in the Chinese subtropical region. Vegetation plots at Mt. Dalaoling in the Three Gorges region were analyzed according to the quantity, type