【作者】 郑九华； 冯永军； 于开芹； 刘西敏；

【Author】 Zheng Jiuhua,Feng Yongjun,Yu Kaiqing,Liu Ximin (College of Resources and Environment,Shandong Agriculture University,Tai’an 271018,China)

【机构】 山东农业大学资源与环境学院；

【摘要】 提出了相对修复年限等重金属污染土壤的植物修复能力评价指标。由于相对修复年限综合考虑了植株重金属含量、植物生物量、土壤重金属含量、重金属环境标准值、土壤和土层深度等影响植物吸收重金属元素能力的多种因素,是衡量重金属污染的植物修复效果的理想指标。同时针对"超富集植物"存在的局限性,以相对修复年限为核心,定义相对修复年限为0～10年的植物为"超富集植物",提出了"超富集植物"筛选和培育的新标准。这些结论可以为重金属污染土壤的植物修复实践研究提供理论依据。更多还原

【Abstract】 Some indexes such as relative remediation time were put forward to evaluate the effects of phytoremediation in the soil pollution by heavy metals.Relative remediation time was an ideal index which can estimate the effects of phytoremediation on heavy metal,because it took into account many factors which affect the absorption ability of heavy metal from soil,such as the heavy metal content,the biomass,the growing period of plants and the content of heavy metals,the environment standard of heavy metals,the bulk density and the depth of soil.Furthermore,the new selection standard of the hyperaccumulators was advanced based on relative remediation time.Hyperaccumulators were named as the plants whose relative remediation time was between 0～10 years.The conclusions can provide theoretic foundations for the practice of the phytoremediation on soil polluted by heavy metal.更多还原