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应用生态学报 ›› 1993, Vol. 4 ›› Issue (4): 353-358.

• 研究论文 • 上一篇    下一篇

受干扰的生态系统Ⅰ.柞蚕林的养分循环

杨思河1, 文诗韵1, 李敦求2, 温达志3, 姜波4, 王昌杰4   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳 110015;
    2. 韩国汉城大学, 汉城;
    3. 中国科学院华南植物研究所, 广州 510650;
    4. 辽宁省蚕业科学研究所, 凤城 118100
  • 收稿日期:1993-06-05 修回日期:1993-08-28 出版日期:1993-10-25 发布日期:1993-10-25
  • 基金资助:

    辽宁省科委基金资助项目

A disturbed ecosystem Ⅰ. Nutrient cycling in tussah-feeding oak plantation

Yang Sihe1, WenShiyun1, Don K. Lee2, Wen Dazhi3   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Seoul National University, Seoul;
    3. South China Institute of Botany, Academia Sinica, Guangzhou 510650
  • Received:1993-06-05 Revised:1993-08-28 Online:1993-10-25 Published:1993-10-25

摘要: 本文通过田间实验与测试揭示了柞蚕林养分循环状态和干扰因素对养分平衡的影响。结果表明,地下部储存的养分占总积累的比重较大。同时叶部养分向树体转移能力较强。柞蚕林二级生产力是以收获蚕茧为主要形式,其养分输出水平对系统的养分平衡产生的影响主要表现对树体养分内循环方面。林木养分储量的下降是造成生产力衰退的重要原因。对养分循环格局的认识有助于对该系统干扰强度进行调控,以增强柞蚕林生态系统的稳定性。

关键词: 柞蚕林, 养分循环, 二级生产力

Abstract: Field experiments and laboratorial work were carried out to understand the nutrient cycling patterns in tussah - feeding oak plantation and the effect of disturbance on nutrient equilibrium. The results show that larger proportion of nutrient is stored in root and more nutrients can transfer from leaf to stem. The cocoon is the main form of the secondary productivity of tussah-feeding oak plantation. Its nutrient output level has a greater effect on the internal nutrient cycling in the tree. The decrease of nutrient storage in the tree is the main cause of the decrease of its productivity. Understanding the patterns of nutrient cycling is beneficial to control the disturbance and to enhance the stability of the ecosystem.

Key words: Tussah-feeding oak plantation, Nutrient cycling, Secondary productivity