植物生态学报 ›› 2008, Vol. 32 ›› Issue (6): 1294-1300.DOI: 10.3773/j.issn.1005-264x.2008.06.010

• 研究论文 • 上一篇    下一篇

桫椤生态系统生物量与生产力

马元丹1, 江洪1,2,*(), 余树全2, 周国模2, 王彬2, 彭少麟3, 彭长辉4, 常杰5, 魏晓华6   

  1. 1 南京大学国际地球系统科学研究所,南京 210093
    2 浙江林学院国际空间生态与生态系统生态研究中心,浙江临安 311300
    3 中山大学有害生物控制与资源利用国家重点实验室,广州 510275
    4 魁北克大学蒙特利尔分校环境科学研究所,蒙特利尔 H3C 3PB,加拿大
    5 浙江大学生命科学学院,杭州 310058
    6 不列颠哥伦比亚大学地球与环境科学系,基隆拉, V1V 1V7,加拿大
  • 收稿日期:2008-01-17 接受日期:2008-06-03 出版日期:2008-01-17 发布日期:2008-11-30
  • 通讯作者: 江洪
  • 作者简介:*(jianghong@nju.edu.cn)
  • 基金资助:
    科技部973项目(2002CB111504);科技部973项目(2002CB410811);科技部973项目(2005CB422208);国家自然科学基金(40671132);科技部数据共享平台建设项目(2006DKA32300-08)

BIOMASS AND PRODUCTIVITY OF A TREE FERN ECOSYSTEM IN CHINA

MA Yuan-Dan1, JIANG Hong1,2,*(), YU Shu-Quan2, ZHOU Guo-Mo2, WANG Bin2, PENG Shao-Lin3, PENG Chang-Hui4, CHANG Jie5, WEI Xiao-Hua6   

  1. 1International Institute for Earth System Science, Nanjing University, Nanjing 210093, China
    2International Research Center of Spatial Ecology and Ecosystem Ecology, Zhejiang Forestry University, Lin’an, Zhejiang 311300, China
    3State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-Sen University, Guangzhou 510275, China
    4Institute of Environment Sciences, University of Quebec at Montreal, Case Postale 8888, Succursale Centre-Ville, Montréal, Québec, H3C3P8, Canada
    5College of Life Science, Zhejiang University. Hangzhou 310058, China
    6University of British Columbia, British Columbia, Canada
  • Received:2008-01-17 Accepted:2008-06-03 Online:2008-01-17 Published:2008-11-30
  • Contact: JIANG Hong

摘要:

活化石植物是最接近于化石物种的现存相似种, 并且具有一定的生态学保守性。利用活化石植物生态系统来估算陆地生态系统碳固存能力的进化趋势是一种有效的手段。该研究中利用标准地-标准木法调查了活化石物种树蕨桫椤(Alsophila spinulosa)生态系统的生物量和生产力。与现存的裸子植物为优势种的生态系统和被子植物为优势种的生态系统相比, 桫椤的生物量(36.151±8.159 Mg C·hm-2)和生产力(2.535±0.174 Mg C·hm-2·a-1)都比较小。与植物化石调查方法相比, 活化石生态系统生物量和生产力数据在描述古生态系统碳固存能力进化趋势方面提供了一种有意义的手段, 并且有助于进一步的理解全球碳平衡演变的过程。

关键词: 活化石, 桫椤, 碳固存能力

Abstract:

Aims A living fossil is the nearest extant equivalent of an extinct species. Our objective is to utilize the biomass and productivity of living-fossil ecosystems to estimate the evolutionary trend in carbon sequestration capacity of terrestrial ecosystems.

Methods We investigated biomass and productivity of a living-fossil tree fern (Alsophila spinulosa) ecosystem in Sichuan Province of China using standard tree sampling methods.

Important findings The biomass and productivity of this living-fossil ecosystem ((36.151 ± 8.159) Mg C·hm -2 and (2.535 ± 0.174) Mg C·hm -2·a-1, respectively) were smaller than that in current gymnosperm- or angiosperm-dominated ecosystems. This provides insight into the evolutionary trend in paleo-ecosystem carbon sequestration capacity and, hence, into understanding global carbon balance.

Key words: living fossil, Alsophila spinulosa, carbon sequestration capacity