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持久性有机污染土壤的植物修复及其机理研究进展

彭胜巍1;周启星1,2   

  1. 1南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室, 天津 300071; 2中国科学院沈阳应用生态研究所 中国科学院陆地生态过程重点实验室,沈阳 110016
  • 收稿日期:2007-11-06 修回日期:1900-01-01 出版日期:2008-03-10 发布日期:2008-03-10

Research advances in phytoremediation and its mechanisms of POPs-contaminated soils.

PENG Sheng-wei1; ZHOU Qi-xing1,2   

  1. 1Key Laboratory of Pollution Processes and Environmental Giteria at Ministry of Education College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; 2Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2007-11-06 Revised:1900-01-01 Online:2008-03-10 Published:2008-03-10

摘要: 随着人类对化学品的依赖程度越来越高,环境的有机污染状况也越来越严重。有机污染土壤的植物修复是指利用植物在生长过程中,吸收、降解、钝化有机污染物的一种原位处理污染土壤的方法,具有应用成本低、生态风险小、对环境副作用小等特点。本文综述了近年来国内外有机污染土壤的植物修复研究进展情况,重点介绍了多氯联苯、多环芳烃、农药和硝基芳香化合物等持久性有机污染物的植物修复,阐述了有机污染土壤植物修复的关键机制,并分析了该技术在实际工程应用中的局限性及应考虑的因素。最后,指出了今后该领域的重点研究方向。

关键词: 土壤微生物, 土壤酶活性, 施肥

Abstract: There is an increasing organic pollution in the environment, because human being is more and more relying on chemicals. Phytoremediation of organic pollutants-contaminated soils is an on-site remediation technology based on the plant absorption, degradation, and passivation of organic pollutants, and characterized by low-cost, low-risk, and low side-effect to the environment. In this paper, some recent research advances in phytoremediation of organic pollutants-contaminated soils both at home and abroad were summarized, with the focus on the phytoremediation of PCBs, PAHs, pesticides, and nitrylaromatic compounds. The key mechanisms of phytoremediation for soils contaminated by organic pollutants were expounded, and the limitations of this technology as well as the affecting factors that should be considered in an actual project were analyzed. Future directions of this research field were pointed out.

Key words: Soil microbial biomass, Soil enzyme activity, Fertilization