杉木根桩和周围土壤酚含量的变化及其化感效应

应用生态学报 ›› 2000, Vol. 11 ›› Issue (2): 190-192.

杉木根桩和周围土壤酚含量的变化及其化感效应

黄志群¹, 廖利平¹, 汪思龙¹, 刘应迪²

1. 中国科学院沈阳应用生态研究所, 沈阳110015;
2. 吉首大学, 吉首416000

收稿日期:1999-07-01 修回日期:1999-10-20 发布日期:2000-03-25
通讯作者: 黄志群,男,1973年生,硕士,主要从事人工林林地退化及化学生态学研究,发表论文多篇.E-mail:zqhuang@iae.syb.ac.cn E-mail:zqhuang@iae.syb.ac.cn
基金资助:
国家自然科学基金(39700115);中国科学院重点资助项目(KZ952-J1-202)

Dynamics of phenolics content of Chinese fir stump-roots and the rhizosphere soil and it's allelopathy

HUANG Zhiqun¹, LIAO Liping¹, WANG Silong¹, LUI Yingdi²

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015;
2. Jishou University, Jishou, 416000

Received:1999-07-01 Revised:1999-10-20 Published:2000-03-25

摘要/Abstract

摘要： 研究了杉木根桩在分解过程中酚类物质的释放规律及其化感效应.结果表明,随着分解程度的加深,根桩中酚类物质的含量减少.根桩中酚类物质含量的梯度为根系>心桩>边桩;根桩在分解过程中酚类物质向外释放并会在土壤中积累,根桩周围土壤中酚类物质含量高于非根桩周围土壤.盆栽试验说明酚类物质会影响杉木种子的萌芽率.将田间调查的杉木树高、地径与根桩密度进行相关分析证明杉木根桩保留在造林地上,不利于下一代杉木的生长.建议改革杉木人工林的传统作业方式,造林前将根桩从造林地中清除.

关键词: 根桩, 酚类物质, 杉木, 化感作用, 分解, 结构多样性, 功能多样性, 环境因子, 庙岛群岛, 物种多样性, 植物群落

Abstract: Studies on the releasing pattern of phenolics during the decomposition of Chinese fir stump root and on its allelopathy show that the phenolics contents in stump-roots decreased with their decomposition.Roots had a higher content of phenolics than heart stumps,and edge stumps had the least.The phenolics was released during decomposition,and accumulated in the soils around stump-roots.Pot culture experiment showed that phenolics affected the germination of Chinese fir seeds.The correlation analysis between the density of Chinese fir stump-root and the tree height and base diameter (BD) of its saplings proved that Chinese fir stump-roots had a negative impact on the growth of the next generation of Chinese fir plantations.It is suggested that the traditional operation of Chinese fir plantations should be reformed,and the stump-roots should be cleared from woodland before reforestation.

Key words: Stump-root, Phenolics, Chinese fir, Allelopathy, Decomposition, plant community, environmental factor., Miao Archipelago, functional diversity, species diversity, structural diversity

黄志群, 廖利平, 汪思龙, 刘应迪. 杉木根桩和周围土壤酚含量的变化及其化感效应[J]. 应用生态学报, 2000, 11(2): 190-192.

HUANG Zhiqun, LIAO Liping, WANG Silong, LUI Yingdi. Dynamics of phenolics content of Chinese fir stump-roots and the rhizosphere soil and it's allelopathy[J]. Chinese Journal of Applied Ecology, 2000, 11(2): 190-192.

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