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生态学杂志 ›› 2005, Vol. ›› Issue (3): 238-242.

• 研究报告 • 上一篇    下一篇

西双版纳白背桐群落生物量研究

冯志立, 郑征, 唐建维, 宋启示, 张建侯   

  1. 中国科学院西双版纳热带植物园, 昆明, 650223
  • 收稿日期:2003-08-01 修回日期:2003-12-26 出版日期:2005-03-10
  • 通讯作者: 冯志立,男,1961年5月生,硕士,助理研究员,主要从事植物生态和土壤生态研究.
  • 基金资助:
    国家自然科学基金项目(30000131和40173039);中国科学院生态系统研究网络(CERN)资助项目

Biomass of tropical secondary Mallotus paniculatus forest in Xishuangbanna

FENG Zhili, ZHENG Zheng, TANG Jianwei, SONG Qishi, ZHANG Jianhou   

  1. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
  • Received:2003-08-01 Revised:2003-12-26 Online:2005-03-10

摘要: 对云南西双版纳热带次生演替初期的白背桐群落生物量进行了测定.结果表明,10龄群落总生物量为7.819 t·hm-2,其中乔木层为1.019 t·hm-2(占群落生物量的88.24%),灌木层.644 t·hm-2(占9.76%),层间植物1.013 t·hm-2(占1.7%),草本层0.143 t·hm-2(占0.2%).与其龄群落相比,10龄群落乔木层、灌木层和层间植物的生物量分别增长了10.04%、122.73%和93.32%,草本层生物量降低83.3%.在演替过程中群落乔木层生物量主要集中于少数优势树种,白背桐、木姜子、榕树的生物量合计26.170 t·hm-2(占乔木层生物量的1.29%).群落乔木层生物量主要以小径级树木的生物量为主,其器官生物量积累的大小顺序依次为:干>枝>根>叶.

Abstract: Employing standard tree regression analysis (for trees) and harvest method,the biomass of tropical secondary forest dominated byMallotus paniculatus in Xishuangbanna was studied. Total biomass of a 10-year-old community was 57.819 t穐m-2,with the biomass of tree,shrub,inter-layer and herb layers 51.019 t穐m-2 (88.24% of community biomass),5.644 t穐 m-2 (9.76%),1.013 t穐m-2 (1.75%) and 0.143 t穐m-2 (0 25%),respectively. From the 5-year-old to 10-year-old plant community,biomass of tree,shrub and inter-layer layers increased by 105.04%,122.73% and 93.32%,respectively,while that of the herb layer decreased by 83.53%. The biomass was mainly concentrated in a few dominant species in the tree layer. Biomass of Mallotus paniculatus,Litsea sp. and Ficus sp. reached 26.170 t穐m-2,accounting for 51.29% of tree layer biomass. The smaller DBH classes mainly contributed to the biomass of tree layer,and organs in the tree layer ranked in order of stem>branch>root>leaf.

Key words: Bird island, Qinghai Lake, Species diversity, Soil environmental factors

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