| 摘要: |
| 以蔺草(Juncus effusus)、水菖蒲(Acorus calamus)、凤眼莲(Eichhornia crassipes)和慈姑(Sagittaria sagittifolia)4种水生植物为研究对象，研究了其两两组合培植对水中Cr6+、Zn2+、Pb2+、Ni2+、Cu2+的富集效果和转运系数。研究表明：水生植物组合对金属富集具有相对的专一性，选择适当的水生植物组合可提高植物对金属的富集量，(蔺草‖凤眼莲)和(蔺草‖慈姑)组合有利于富集Cr6+；(蔺草‖水菖蒲)、(水菖蒲‖慈姑)和(凤眼莲‖慈姑)组合有利于富集Zn2+；(凤眼莲‖慈姑)组合有利于富集Pb2+；(蔺草‖凤眼莲)和(蔺草‖慈姑)组合有利于富集Ni2+；(蔺草‖凤眼莲)、(蔺草‖慈姑)和(水菖蒲‖慈姑)组合有利于富集Cu2+。凤眼莲分别与蔺草、水菖蒲组合时，相互促进Zn2+转运；凤眼莲与蔺草组合时相互促进Ni2+转运。 |
| 关键词: 园林植物 植物组合 重金属 富集特性 |
| DOI： |
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| 基金项目: |
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| Effect of Aquatic Plant Combination on the Enrichment of Heavy Metals in Pollution Water |
| LU Dongfang,WEI Lingwei,SHEN Qinwei,XIONG Huijin,ZHENG Yushan |
| Abstract: |
| The aquatic plants of Juncus effusus, Acorus calamus, Eichhornia crassipes, and Sagittaria sagittifolia were mix cropped pairwise in hydroponic culture system. The effects of different pairwise combination patterns on removing of Cr6+, Zn2+, Pb2+, Ni2+, and Cu2+ and the effect of metals ions enrichment characteristics and translocation factors were studies. The results showed that the combination of aquatic plants had relative specificity for the enrichment of metals, and the selection of a suitable combination of aquatic plants was beneficial to increase the enrichment of metals ions. Among them, the combination of (Juncus effuses ‖ Eichhornia crassipes) and (Juncus effuses ‖ Sagittaria sagittifolia) is beneficial to the enrichment of Cr6+; the combination of (Juncus effuses ‖ Acorus calamus), (Acorus calamus ‖ Sagittaria sagittifolia) and (Eichhornia crassipes ‖ Sagittaria sagittifolia) is favorable to the enrichment of Zn2+; the (Eichhornia crassipes ‖ Sagittaria sagittifolia) combination is beneficial to the enrichment of Pb2+; the (Juncus effuses ‖ Eichhornia crassipes) and (Juncus effuses ‖ Sagittaria sagittifolia) combination are beneficial to the enrichment of Ni2+; (Juncus effuses ‖ Eichhornia crassipes), (Juncus effuses ‖ Sagittaria sagittifolia) and (Acorus calamus ‖ Sagittaria sagittifolia) combination are favorable to enrichment of Cu2+. In terms of the translocation factors, combinations of (Eichhornia crassipes ‖ Juncus effusus) mutually promoted the transport of Zn2+, and the same goes for (Eichhornia crassipes ‖ Acorus calamus). When Eichhornia crassipes coexisted with Juncus effusus, they mutually promoted the transport of Ni2+. |
| Key words: landscape plant plant combination heavy metal enrichment characteristics |
