| Plant coexistence can enhance phytoextraction of cadmium by tobacco （Nicotiana tabacum L.） in contaminated soil |
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| 作者姓名： | Ling Liu Yuefang Li Jianjun Tang Liangliang Hu Xin Chen |
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| 作者单位： | Ling Liu(College of Life Sciences,Zhejiang University,Hangzhou 310058,China;College of Agriculture, Henan University of Science and Technology, Luoyang 471003, China);Yuefang Li,Jianjun Tang,Liangliang Hu,Xin Chen(College of Life Sciences,Zhejiang University,Hangzhou 310058,China) |
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| 基金项目： | This work was supported by the Science and Technology
Department of Zhejiang Province (No. 2007C13063),
the National Natural Science Foundation of China (No.
30970477), the Natural Science Foundation of Zhejiang
Province (No. Y307418) and the Key Laborato |
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| 摘 要： | A mesocosm experiment was conducted to investigate whether plant coexistence affects cadmium (Cd) uptake by plant in contaminated soil.Tobacco (Nicotiana tabacum L.var.K326) and Japanese clover (Kummerowia striata (Thunb.) Schindl.) were used.Cadmium was applied as 3CdSO 4 ·8H 2 O in solution at three levels (0,1,and 3 mg/kg soil) to simulate an unpolluted soil and soils that were slightly and moderately polluted with Cd.Tobacco (crop),Japanese clover (non-crop),and their combination were grown under each C...
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| 关 键 词： | 烟草公司 植物修复 污染土壤 镉污染 共存 生物富集系数 镉（Cd） 生物利用度 |
| 收稿时间： | 2010/4/27 0:00:00 |
| 修稿时间： | 7/8/2010 12:00:00 AM |
Plant coexistence can enhance phytoextraction of cadmium by tobacco
(Nicotiana tabacum L.) in contaminated soil |
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| Ling Liu,Yuefang Li,Jianjun Tang,Liangliang Hu,Xin Chen.Plant coexistence can enhance phytoextraction of cadmium by tobacco
(Nicotiana tabacum L.) in contaminated soil[J].Journal of Environmental Sciences,2011,23(3):453-460. |
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| Authors: | Ling Liu Yuefang Li Jianjun Tang Liangliang Hu and Xin Chen |
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| Institution: | 1. College of Life Sciences,Zhejiang University,Hangzhou 310058,China;College of Agriculture, Henan University of Science and Technology, Luoyang 471003, China
2. College of Life Sciences,Zhejiang University,Hangzhou 310058,China |
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| Abstract: | A mesocosm experiment was conducted to investigate whether plant coexistence a ects cadmium (Cd) uptake by plant in
contaminated soil. Tobacco (Nicotiana tabacum L. var. K326) and Japanese clover (Kummerowia striata (Thunb.) Schindl.) were used.
Cadmium was applied as 3CdSO4 8H2O in solution at three levels (0, 1, and 3 mg/kg soil) to simulate an unpolluted soil and soils that
were slightly and moderately polluted with Cd. Tobacco (crop), Japanese clover (non-crop), and their combination were grown under
each Cd treatment. Compared to monoculture and under all Cd treatments, co-planting with Japanese clover did not a ect tobacco
biomass but significantly increased Cd concentration in all tobacco tissues and enhanced Cd accumulation in tobacco shoots and roots.
Compared to monoculture, co-planting reduced soil pH and increased Cd bioavailability. For tobacco, co-planting with Japanese clover
increased the Cd bioconcentration factor (BCF) in Cd contaminated soil. Japanese clover also accumulated substantial quantities of Cd
in shoots and roots. Thus, total Cd uptake by the plants was much greater with co-planting than with monoculture. The results suggested
that phytoextraction can be e ectively increased through tobacco co-planting with Japanese clover in mildly Cd-contaminated soil. |
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| Keywords: | plant coexistence phytoextraction cadmium tobacco Japanese clover |
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