多氯联苯污染土壤的植物-微生物联合田间原位修复  

Combined remediation of PCBs polluted soil by plant and microorganism in a field trial

作　　者：徐莉[1,2] 滕应[1,2] 张雪莲[3] 王家嘉[4] 李振高[1] 刘五星[1] 骆永明[1,2] 

机构地区：[1]中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室,江苏南京210008 [2]中国科学院研究生院,北京100049 [3]南京林业大学森林资源与环境学院,江苏南京210037 [4]贵州大学生命科学学院,贵州贵阳550025

出　　处：《中国环境科学》2008年第7期646-650,共5页China Environmental Science

基　　金：中国科学院知识创新工程项目(KZCX2-YW-404,CXTDZ2005-4);国家自然科学基金资助项目(40432005,40701080);国家“973”项目(2002CB410809)

摘　　要：选择宿主植物紫花苜蓿(Medicago sativa L.),同时接种苜蓿根瘤菌(Rhizobium meliloti)或/和地表球囊霉(Glomus versiforme),在田间试验条件下,研究植物-微生物联合作用对多氯联苯(PCBs)污染土壤的修复效应.结果表明,所有种植植物的处理,根际土壤PCBs的去除率均高于对照,其中紫花苜蓿并接种根瘤菌的处理,土壤PCBs的去除率最高,达到42.6%,显著高于其他处理.土壤PCBs同系物分析结果表明,所有种植植物的处理都增加了土壤中低氯代PCBs的比例,特别是紫花苜蓿并接种根瘤菌的处理.接种根瘤菌明显促进植株的生长以及植株对PCBs的吸收和转运.The remediation of polychlorinated biphenyls（PCBs） contaminated soil by inoculation with arbuscular mycorrhizal fungus（AM,Glomus versiforme） and/or rhizobium（Rhizobium meliloti） with a host plant（Medicago sativa L.） was studied in a field trial. Concentrations of PCBs decreased at a higher rate in all soils with this planted treatment compared with untreated soils. The planted treatment that received the rhizobial inoculum decreased the concentration of PCBs by 42.6%,which was significantly higher than the other treatments. Analysis of PCBs composition showed that the percentage of lower chlorinated PCBs increased in all of the planted treatments,especially the plant treatment with rhizobium. Rhizobium could promote the growth of the plant and even facilitate the absorbability and the transportation of the PCBs in the plant. The field trial showed that the plant with rhizobium could be used to remediate soils contaminated with PCBs.

关 键 词：多氯联苯 紫花苜蓿 根瘤菌 菌根真菌 

分 类 号：X17[环境科学与工程—环境科学] S154.36[农业科学—土壤学]