Long-term field phytoextraction of zinc/cadmium contaminated soil by Sedum plumbizincicola under different agronomic strategies
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In two long-term field experiments the zinc (Zn)/cadmium (Cd) hyperaccumulator Sedum plumbizincicola (S. plumbizincicola) was examined to optimize the phytoextraction of metal contaminated soil by two agronomic strategies of intercropping with maize (Zea mays) and plant densities. Soil total Zn and Cd concentrations decreased markedly after long-term phytoextraction. But shoot biomass and Cd and Zn concentrations showed no significant difference with increasing remediation time. In the intercropping experiment the phytoremediation efficiency in the treatment "S. plumbizincicola intercropped with maize" was higher than in S. plumbizincicola monocropping, and Cd concentrations of corn were below the maximum national limit. In the plant density experiment the phytoremediation efficiency increased with increasing plant density and 440,000 plants ha(-1) gave the maximum rate. These results indicated that S. plumbizincicola at an appropriate planting density and intercropped with maize can achieve high remediation efficiency to contaminated soil without affecting the cereal crop productivity. This cropping system combines adequate agricultural production with soil heavy metal phytoextraction.
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Intercropping can be an option to facilitate the phytomanagement of TE-contaminated soils, and plant densities as well, notably to phytoextract TE without affecting the productivity and quality of undersown legumes.
“Intercropping can be an option to facilitate the phytomanagement of TE-contaminated soils, and plant densities as well (Deng et al., 2016;Bani et al., 2015), notably to phytoextract TE without affecting the productivity and quality of undersown legumes.”
From Intensify production, transform biomass to energy and novel goods and protect soils in Europe—A vision how to mobilize marginal lands (2018) · cites this paper as Deng et al., 2016
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- Authors
- Deng, L., Li, Z., Wang, J., Liu, H., Li, N., Wu, L., Hu, P., Luo, Y., & Christie, P.
- Affiliations
- Guizhou University (CN)
- Chinese Academy of Sciences (CN)
- Corresponding author
- Wu, Longhua
- Venue
- International Journal of Phytoremediation
- Publisher
- Informa UK Limited
- Published
- 2015-10-07
- Volume
- 18
- Issue
- 2
- Pages
- 134-140
- ISSN
- 1522-6514 (ISSN-L)
- 1549-7879
- OpenAlex
- W2177259199
- Cited by
- 117
- References
- 32
- Citations by year
- 2026: 7 · 2025: 9 · 2024: 8 · 2023: 13 · 2022: 14 · 2021: 14 · 2020: 14 · 2019: 10 · 2018: 13 · 2017: 10 · 2016: 5
- FWCI
- 5.77
- Type
- journal article
- Language
- en
- Open access
- green
- ir.yic.ac.cn
- Locations
- International Journal of Phytoremediation (publishedVersion)
- PubMed (publishedVersion)
- Knowledge Repository of Yantai Institute of Coastal Zone Research, CAS (Yantai Institute of Coastal Zone Research) (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
- Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
- Keywords
- phytoextraction, heavy metal-contaminated soil, zinc, cadmium, Sedum plumbizincicola, hyperaccumulator plants, intercropping, maize, plant density, long-term field experiment, soil remediation
- MeSH terms
- Agriculture, Biodegradation, Environmental, Cadmium, Zea mays, Soil Pollutants, Zinc, Sedum, Sorghum
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