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应用生态学报 ›› 1998, Vol. 9 ›› Issue (5): 458-462.

• 研究论文 • 上一篇    下一篇

小良热带人工混交林的凋落物及其生态效益研究

任海1, 彭少麟1, 刘鸿先1, 余作岳1, 方代有2   

  1. 1. 中国科学院华南植物研究所, 广州510650;
    2. 广东茂名市小良水土保持试验推广站, 茂名525446
  • 收稿日期:1996-01-09 修回日期:1996-11-08 出版日期:1998-09-25 发布日期:1998-09-25
  • 基金资助:

    国家自然科学基金重点资助项目(39330040);中国科学院重中之重06项目

Litterfall and its ecological effects at Xiaoliang tropical artificial mixed plantation

Ren Hai1, Peng Shaolin1, Liu Hongxian1, Yu Zuoyue1   

  1. South China Institute of Botany, Academia Sinica, Guangzhou 510650
  • Received:1996-01-09 Revised:1996-11-08 Online:1998-09-25 Published:1998-09-25

摘要: 对小良热带人工混交林10年凋落量及其季节和年际动态研究表明,小凋落物总量年均5.539t·hm-2;凋落量的季节变化明显,一般以湿季的7月为凋落高峰;随着人工林的发育,其凋落物量的年际变化逐渐稳定;森林枯枝落叶层贮量为4.9t·hm-2, 少于其年均凋落量,处于分解大于积聚的周转过程中;森林枯枝落叶层的存在可降低温度,提高湿度,显着减少径流量和泥沙流失量,并可提高土壤肥力和增加土壤动物的多样性。

关键词: 小良, 热带人工混交林, 凋落物, 生态效益

Abstract: Ten-years studies on litterfall amount and its seasonal and annual dynamics at Xiaoliang tropical artificial mixed plantation show that the annual average amount of small litterfall was 5.539t·hm-2 .Its seasonal variation occurred obviously, with a peak in wet July.As the development of the plantation, the annual amount of litterfall was getting stable gradually.The storage of litterfall layer was 4.9t·hm-2, less than the annual litterfall, indicating that the decomposition rate was greater than accumulation rate.The existence of forest litterfall could lower temperature, raise relative humidity, reduce runoff and soil erosion, improve soil fertility, and increase biodiversity of soil animals.

Key words: Xiaoliang, Tropical artificial mixed plantation, Litterfall, Ecological effects