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生态学杂志 ›› 2005, Vol. ›› Issue (6): 595-598.

• 研究报告 • 上一篇    下一篇

杉木乳源木莲混交林凋落物研究

周东雄   

  1. 福建省三明市林业科学研究所, 三明, 365000
  • 收稿日期:2004-07-10 修回日期:2004-11-24 出版日期:2005-06-10
  • 通讯作者: 周东雄,男,1959年生,高级工程师,从事森林培育和森林生态学研究.E-mail:zdx5825187@tom.com.
  • 基金资助:
    福建省林业厅科学基金资助项目(B980012)

Litter of mixed forest of Cunninghamia lanceolata and Manglietia yuyuanensis

ZHOU Dongxiong   

  1. Sanming Research Institute of Forestry, Fujian Province, Sanming 365000, China
  • Received:2004-07-10 Revised:2004-11-24 Online:2005-06-10

摘要: 分析10年生杉木乳源木莲(3:1)混交林和杉木纯林凋落物的数量、组成以及凋落规律、分解速率和养分归还量.结果表明,混交林平均年凋落物量4004 kg·hm-2(8~10年),是杉木纯林凋落物量的3.15倍.在凋落物各组分中,落叶占比重最大.乳源木莲一年中有3次凋落高峰,95%的凋落物分解仅需2.1年,杉木需要4.4年,主要营养元素归还较快,对维持地力,实现森林的可持续发展有积极的作用.

关键词: SRES, 气候变化, 水稻, 模拟

Abstract: Analysis was carried out to the amount,component,falling rule,decomposition rate and the nutrients return of litterfall in the mixed forest of M.yuyuanensis and C.lanceolata,as well as those of C.lanceolata pure stand.The results showed that annual litterfall was up to 4004 kg穐m-2 in the mixed forest,which was 2.15 times higher than that in the pure C.lanceolata stands.Needle litter was the maximum in the components of litterfall.M.yuyuanensis had three peaks of litterfall.Decomposition period of M.yuyuanensis was 2.1 yr in the 95% of litterfall,while 4.4 yr was needed for C.lanceolata.It was faster in the return of nutrient elements in the mixed forest,which suggested that mixed stands have a positive effect on the preservation of soil fertility and the sustainable development of forestry.

Key words: SRES, Climate change, Rice, Simulation

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