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首页> 外文期刊>Journal of soils & sediments >Influence of alkaline silicon-based amendment and incorporated with biochar on the growth and heavy metal translocation and accumulation of vetiver grass (Vetiveria zizanioides) grown in multi-metal-contaminated soils
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Influence of alkaline silicon-based amendment and incorporated with biochar on the growth and heavy metal translocation and accumulation of vetiver grass (Vetiveria zizanioides) grown in multi-metal-contaminated soils

机译：基于碱性硅的修正和生物炭对多金属污染土壤生长和重金属​​易位和副转化术（Vetiveria Zizanioides）的生长和重金属​​易位和积累的影响

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摘要

Purpose This study investigated the effects of alkaline silicon-based amendment (A) and incorporated with biochar (B) on the growth, heavy metal translocation, and accumulation of vetiver grass (Vetiveria zizanioides) grown in multi-metal-contaminated soils.Materials and methods Soil incubation for 6months and pot experiments for 6months were performed to investigate the growth and the translocation factor (TF) and bioaccumulation factor (BCF) values of heavy metals in vetiver grown in As-, Cd-, Cr-, and Pb-contaminated soils amended with A (0.5%) and AB (0.5% A; 1.5% B).Results and discussion The vetiver could grow in multi-metal-contaminated soils due to the restriction of metals translocation in vetiver. Vetiver could be the plant for phytostabilization of As, Cr, Cd, and Pb because As, Cr, Cd, and Pb accumulated by the vetiver were largely retained in the roots, as the TF values for As, Cr, Cd, and Pb were 1; the BCF values for As, Cr, Cd, and Pb were obviously greater in roots than shoots. Application of A and AB markedly improved vetiver growth due to A- and AB-induced accumulation of Cd, Pb, and Cr in the roots, and then enhanced phytostabilization of Cd, Pb, and Cr in roots based on the BCF values, and the immobilization of Cd and Pb in soils based on increase of soil pH and Si-induced accumulation of Cd, Pb, and Cr in the roots.Conclusions Vetiver represents a candidate for revegetation of multi-metal-contaminated soils amended by A or AB. Further investigations are required to determine the feasibility of revegetation in multi-metal-contaminated soils at the field scale.
机译：目的本研究研究了碱性硅基修正案（a）的影响，并掺入生物炭（b）对多金属污染的土壤中生长的生长，重金属易位和累积草（vetiveria zizanioides）的积累。材料和方法采用6个月和盆栽试验的土壤孵育6个月，探讨培养的钙，CD-，CR-和PB污染的乙腺中重金属的生长和易位因子（TF）和生物累积因子（BCF）值用（0.5％）和AB（0.5％a; 1.5％b）的土壤修正。结果和讨论由于vetiver中的金属易位的限制，vetiver可能在多金属污染的土壤中生长。 Vetiver可以是植物植物的植物，因为，Cr，Cd和Pb的植物，因为vetiver累积的Cr，Cd和Pb在很大程度上保留在根中，作为As，Cr，Cd和Pb的TF值是<1; BCF值为As，Cr，Cd和Pb在根中显然比枝条更大。 A和AB的应用显着提高了由于CD，Pb和Cr的Ab诱导的CD，Pb和Cr的积累而增强的vetiver生长，然后基于BCF值增强CD，Pb和Cr的植物植物中的植物化，基于土壤pH和Si诱导的CD，Pb和Cr的CS诱导的CD，Pb和Cr的积累的土壤中CD和Pb的固定化。结论vetiver代表了由A或AB修正的多金属污染土壤的候选物。需要进一步调查来确定现场规模的多金属受污染的土壤中的再培养性的可行性。

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  • 来源
    《Journal of soils & sediments》 |2019年第5期|2277-2289|共13页
  • 作者

    Mu Jing; Hu Zhengyi; Huang Lijuan; Tang Sichen; Holm Peter E.;

  • 作者单位

    Univ Chinese Acad Sci Coll Resources & Environm Beijing 101408 Peoples R China|Univ Copenhagen Dept Plant & Environm Sci Thorvaldsensvej 40 DK-1871 Frederiksberg C Denmark|Sino Danish Ctr Educ & Res SDC Beijing 100190 Peoples R China;

    Univ Chinese Acad Sci Coll Resources & Environm Beijing 101408 Peoples R China|Sino Danish Ctr Educ & Res SDC Beijing 100190 Peoples R China|Chinese Acad Sci Res Ctr Ecoenvironm Sci Beijing 100085 Peoples R China;

    Univ Chinese Acad Sci Coll Resources & Environm Beijing 101408 Peoples R China|Univ Copenhagen Dept Plant & Environm Sci Thorvaldsensvej 40 DK-1871 Frederiksberg C Denmark|Sino Danish Ctr Educ & Res SDC Beijing 100190 Peoples R China;

    Univ Chinese Acad Sci Coll Resources & Environm Beijing 101408 Peoples R China;

    Univ Copenhagen Dept Plant & Environm Sci Thorvaldsensvej 40 DK-1871 Frederiksberg C Denmark|Sino Danish Ctr Educ & Res SDC Beijing 100190 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Alkaline silicon-based amendment; Biochar; Multi-metal-contaminated soils; Revegetation; Vetiver grass;

    机译：基于碱性硅的修正案;生物炭;多金属污染的土壤;再训练;喂草草;

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