欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 1992, Vol. 3 ›› Issue (2): 99-104.

• 研究论文 •    下一篇

温带森林生态系统粗死木质物动态研究——以中美两个温带天然林生态系统为例

陈华1, M. E. Harmon2   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳 110015;
    2. 美国Oregon州立大学森林科学系, Corvallis 97331
  • 收稿日期:1990-07-30 出版日期:1992-04-25 发布日期:1992-04-25
  • 基金资助:

    国家自然科学基金

Dynamic study of coarse woody debris in temperate forest ecosystems

Chen Hua1, M. E. Harmon2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Department of Forest Science, Oregon State University, Corvallis 97331, USA
  • Received:1990-07-30 Online:1992-04-25 Published:1992-04-25

摘要: 通过对我国长白山自然保护区红松针阔混交林和美国Andrews试验林异叶铁杉林的林木死亡量、粗死木质物(CWD)贮量、分解速率和它们在生态系统养分循环等方面动态研究表明,CWD是温带天然林生态系统的重要组成部分,它们在生态系统功能方面的重要性,因森林类型的不同而不尽相同,CWD在针叶林中比针阔混交林中更为重要。CWD在生态系统养分循环中的一个重要作用,很可能在于系统遭受重大外界扰动后,起到贮藏养分,增加系统稳定性的作用。未来全球森林凋落物C贮量估测时,应该包括CWD,否则将低估全球森林凋落物C贮量2.0—16×1013kg,系统相对误差达2—10%。

关键词: 粗死木质物, 林木死亡量, 分解速率, 养分贮量, C贮量, 森林凋落物

Abstract: In this paper, tree mortality, coarse woody debris(CWD)storage, its decomposition rate and role in nutrient cyclings in two temperate forest ecosystems of Changbai Mountain Natural Reserve of China and Andrews Experimental Forests of USAwere studied. Resuits show that CWDis an important component in temperate natural forest ecosystems. Its functional importance varies with forest types and decreases from coniferous forest to mixed forest. Aprimary role of CWDin nutrient cyclings within forest may be to retain nutrients and stabilize ecosystem following major natural disturbances. Global estimation of carbon stored in detritus should include CWDin future, otherwise, it is possible to underestimate 2—16×1013kg of global carbon storage in forest detritus, or relative error in system is 2—10%.

Key words: Coarse woody debris, Tree mortality, Decomposition rate, Nutrient storage, Carbon storage, Forest detritus