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应用生态学报 ›› 1998, Vol. 9 ›› Issue (5): 463-467.

• 研究论文 • 上一篇    下一篇

杨树刺槐混交林及纯林枯落叶分解

贾黎明1, 方陆明2, 胡延杰3   

  1. 1. 北京林业大学森林资源与环境学院, 北京100083;
    2. 浙江林学院, 临安311300;
    3. 中国林业科学研究院情报研究所, 北京100091
  • 收稿日期:1998-03-17 修回日期:1998-07-03 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(39230280)

Decomposition of leaf litter in pure and mixed stands of poplar and black locust

Jia Liming1, Fang Luming2, Hu Yanjie3   

  1. 1. College of Forest Resources and Environment, Beijing Forestry University, Beijing, 100083;
    2. Zhejiang Forestry College, Lin'an, 311300;
    3. Institute of Information, Chinese Academy of Forestry, Beijing, 100091
  • Received:1998-03-17 Revised:1998-07-03 Online:1998-09-25 Published:1998-09-25

摘要: 研究了杨树(Populus spp.)、刺槐(Robiniapseudoacacia)纯林及混交林枯落叶一年中的分解及养分动态变化规律。结果表明,杨树枯落叶分解速度较慢,刺槐较快,而混交林则较杨树有较大提高。在分解过程中,杨树枯落叶N、P释放困难,需经过长达10个月的养分富积过程;刺槐枯落叶N、P元素释放较为容易;混交林枯落叶养分富积时间缩短、幅度下降,分解速度加快,说明杨树和刺槐混交有利于枯落叶分解和N、P循环。

关键词: 杨树, 刺槐, 混交林, 枯落叶, 分解

Abstract: One year's study on the decomposition and nutrient dynamics of leaf litter in pure and mixed stands of poplar and black locust shows that the decomposition of poplar leaf litter was slow, and that of black locust leaf litter was fast; the mixed stand had a faster decomposition speed of leaf litter than poplar.During decomposition the Nand Prelease of poplar leaf litter was difficult, taking more than 10 months for nutrient immobilization; while than of black locust leaf litter was much easier.The time and range of Nand Pimmobilization of leaf litter in mixed stand were cut down, and the decomposition speed of leaf litter increased, indicating that mixed planting with poplar and black locust was beneficial to the decomposition of leaf litter and the cycling of Nand P.

Key words: Poplar, Black locust, Mixed stands, Leaf litter, Decomposition