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Screening of 19 Salix clones in effective phytofiltration potentials of manganese, zinc and copper in pilot-scale wetlands

文献类型： 外文期刊

作者： Yang, Weidong 1 ; Zhao, Fengliang 1 ; Ding, Zheli 1 ; Shohag, Md Jahidul Isalm 1 ; Wang, Yuyan 1 ; Zhang, Xincheng; 1 ;

作者机构： 1.Zhejiang Univ, Coll Environm & Resource Sci, Key Lab Environm Remediat & Ecol Hlth, Minist Educ, Hangzhou, Zhejiang, Peoples R China

2.CATAS, Danzhou Sci Observing & Expt Stn Agroenvironm, Environm & Plant Protect Inst, Minist Agr, Danzhou, Peoples R China

3.CATAS, Haikou Expt Stn, Haikou, Hainan, Peoples R China

4.Jiujiang Vocat Univ, Coll Agr Econ & Technol, Jiujiang, Peoples R China

5.Hainan Univ, Coll Agr, Haikou, Hainan, Peoples R China

关键词： Salix spp.; manganese; zinc; copper; phytofiltration

期刊名称：INTERNATIONAL JOURNAL OF PHYTOREMEDIATION （ 影响因子：3.212； 五年影响因子：3.275 ）

ISSN： 1522-6514

年卷期： 2018 年 20 卷 13 期

页码：

收录情况： SCI

摘要： Willows (Salix spp.) have been regarded as one of interesting plants for phytofiltration of water contaminated with trace metals. In this paper, the clonal differences in tolerance and phytofiltration capacity of mixed metals (Mn, Zn, and Cu) were evaluated in greenhouse pilot-scale wetlands with a floating-support culture system. The results showed that broad clonal variations of biomass accumulation in response to mixed metals ranging from growth inhibition to stimulation. Clones differed in tolerance to multi-metals by tolerance index (TI) based on shoot and root biomass. We also found that wide variations in uptake and accumulation of three metals, which was related to species/clones and metal species. The willows showed high Mn and Zn translocation capacity from roots to leaves suitable for phytoextraction. In contrast, all clones had poor Cu translocation capacity, and Cu mainly retained in roots suitable for rhizofiltration. Among all Salix clones, clones SM30 and J903 had large phytofiltration potential for three metals with their high tolerance.

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