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| Research progress in phytoextraction of heavy metal contaminated saline soil |
| Received:February 03, 2016 |
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| KeyWord:saline soil;heavy metal pollution;halophyte;phytoremediation;phytoextraction;research progress |
| Author Name | Affiliation | E-mail | | LIANG Li-chen | MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | LIU Wei-tao | MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | lwt@nankai.edu.cn | | ZHANG Xue | MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | CHEN Chen | MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | HUO Xiao-hui | MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | LI Song | MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | |
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| Abstract: |
| Soil salinization and heavy metal contamination have been global environmental problems. Many regions throughout the world are simultaneously contaminated by high concentrations of soluble salts and heavy metals, posing serious risks to human health. Heavy metal pollution in saline soil has caused increasing concerns. Compared with glycophytes, halophytic plants can survive, even thrive, in saline soil containing high concentrations of sodium and chloride ions, and are thus more suitable for phytoremediation of heavy metal pollution in saline soil. In recent years, many researchers in China and abroad have gradually carried out studies on phytoremediation of heavy metal contaminated saline soil by use of halophytes and a series of important research results has been reported. However, review articles dealing with phytoextraction of heavy metal pollution in saline soil are still scarce. Therefore, this paper reviewed recent progress in the mechanisms of halophyte tolerance to salt and heavy metal stresses, the phytoextraction potential of halophytes and the main factors influencing phytoex traction potential. Moreover, the feasibility of utilizing halophytes for phytoextraction, the phytoextraction efficiency, as well as the limitations and the challenges of phytoextraction by halophytes are also fully discussed. Finally, future research directions are proposed so as to provide useful references for phytoextraction of heavy metal contaminated saline soil in the future. |
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