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应用生态学报 ›› 2003, Vol. ›› Issue (11): 2067-2071.

• 研究论文 • 上一篇    下一篇

污染物在根-土界面的化学行为与生态效应

王美娥1, 周启星1, 张利华2   

  1. 1. 中国科学院沈阳应用生态研究所陆地生态过程重点实验室, 沈阳110016;
    2. 浙江省农业科学院作物研究所, 杭州310021
  • 收稿日期:2002-12-05 修回日期:2003-02-24 出版日期:2003-11-15
  • 通讯作者: 王美娥,女,1975年生,在读博士研究生,现从事根-土界面污染生态过程的研究,发表论文5篇,E-mail:wmeie@hotmail.com.
  • 基金资助:
    国家杰出青年科学基金(20225722);国家重点基础研究发展规划项目(G1999011808);中国科学院知识创新工程重要方向资助项目(KZCX2SW416)

Chemical behavior and ecological effects of pollutants acting on root-soil interface

WANG Meie1, ZHOU Qixing1, ZHANG Lihua 2   

  1. 1. Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Crop Research Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2002-12-05 Revised:2003-02-24 Online:2003-11-15

摘要: 根土界面是污染物进入植物体内的主要通道和导致一系列生态安全问题的特殊微生态区.本文提出污染物在根土界面上的化学行为和生态效应包括根际化学行为与生态效应,根系化学行为与生态效应两个方面的具体内容,并从理论上根据最新的研究进展对这两方面内容进行了探讨,指出根际化学行为与生态效应包括根际pH环境与吸附行为、根际氧化还原行为、根际化学致毒效应、根际微生物效应及根际生物酶反应等;根系化学行为与生态效应包括根系分泌物、根系酶系统的影响、干扰正常生理过程、改变细胞结构与功能、干扰生物大分子的结构和功能等.并阐述根土界面上的化学行为和生态效应在污染生态学中的重要性以及研究中存在的问题.

关键词: 根-土界面, 根际, 根系, 污染物, 化学行为, 生态效应

Abstract: Root-soil interface is the main entrance of pollutants intruding into plant tissues and the special micro-ecosphere that can result in a series of ecological safety problems. In this review, the concept of root-soil interface is presented and it is suggested that root-soil interface behavior and effects of chemical pollutants should be grouped into two aspects as rhizosphere chemical behavior and ecological effects and root chemical behavior and ecological effects.These two aspects are theoretically discussed according to the latest research advances.Rhizosphere chemical behavior and ecological effects included rhizosphere pHenvironment and adsorptive behavior, rhizosphere oxidation-reduction behavior, rhizosphere chemical toxicology effects, rhizosphere microbiological effects,and rhizosphere bioenzymatic reaction etc.,and root chemical behavior and ecological effects included root exudation, influence of enzymatic systems in roots, disturbance of normal physiological processes, change of cellular structure and function,and interference of structure and function of biological macromolecules.Particular attention should be paid to the significance as well as some problems of research on chemical behavior and ecological effects of pollutants acting root-soil interface in pollution ecology.

Key words: Root-soil interface, Rhizosphere, Root, Pollutant, Chemical behavior, Ecological effect

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