| 铜尾矿库区土壤与植物中重金属形态分析 |
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| 引用本文： | 王友保,张莉,沈章军,李晶,刘登义.铜尾矿库区土壤与植物中重金属形态分析[J].应用生态学报,2005,16(12):2418-2422. |
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| 作者姓名： | 王友保 张莉 沈章军 李晶 刘登义 |
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| 作者单位： | 安徽师范大学生命科学学院,芜湖,241000 |
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| 基金项目： | 国家自然科学基金项目(30470270)，重要生物资源保护与利用研究安徽省重点实验室项目，安徽省教育厅自然科学基金资助项目(2003kj156,2004kj184,2005kj183). |
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| 摘 要： | 对铜陵铜尾矿区土壤和植物中重金属形态进行了研究.结果表明，尾矿库区种植地极端贫瘠，有机质含量仅2.6～5.8 g·kg-1，而土壤Cu、Cd、Pb、Zn含量皆高于对照土壤，其中Cu含量达809.30～1 395.54 mg·kg-1 ，Cd含量达3.25～6.35 mg·kg-1，达到对照土壤30～60倍.结缕草和三叶草体内重金属含量与土壤重金属交换态及有机结合态含量成正相关，与碳酸盐结合态、铁锰氧化物结合态成显著或极显著负相关，与矿物态含量相关性不显著.在两种优势植物中，Cu、Zn、Pb均以活性较低的醋酸提取态、盐酸提取态和残渣态为主；Zn在根系和茎叶中，NaCl提取态占有较大比例，而Cd均以NaCl提取态为主.
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| 关 键 词： | 铜尾矿 重金属 化学形态 结缕草 三叶草 |
| 文章编号： | 1001-9332(2005)12-2418-05 |
| 收稿时间： | 2005-02-24 |
| 修稿时间： | 2005-07-06 |
Chemical forms of heavy metals in the soils and plants of copper tailings yard |
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| WANG Youbao,ZHANG Li,SHEN Zhangjun,LI Jing,LIU Dengyi.Chemical forms of heavy metals in the soils and plants of copper tailings yard[J].Chinese Journal of Applied Ecology,2005,16(12):2418-2422. |
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| Authors: | WANG Youbao ZHANG Li SHEN Zhangjun LI Jing LIU Dengyi |
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| Affiliation: | College of Life Sciene, Anhui Normal University, Wuhu 241000, China. wybzl@tom.com |
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| Abstract: | The study on the chemical forms of heavy metals in the soils and plants at the copper tailings yard in Tongling City indicated that the soils were extremely poor, with organic mater content being 2.6-5.8 g x kg(-1), only 1/15 of the control, while their Cu, Cd, Pb and Zn contents were higher than the control, with Cu 809.30-1395.54 mg x kg(-1) and Cd 3.25-6.35 mg x kg(-1), as 30-60 times as those of the control. The heavy metals contents in Zoysia japonica and Trifolium pratense had a significantly positive correlation with the contents of their exchangeable and organic forms in soils, a significantly or very significantly negative correlation with the forms of Fe-Mn oxides and carbonate, and no correlation with residual form. The main forms of Cu, Zn and Pb in Z. japonica and T. pratense were HAC-and HCl-extractable, and residual. The NaCl-extractable Zn content in the roots, stems and leaves of Z. japonica and T. pratense occupied a higher proportion, while NaCl-extractable Cd was the main form of Cd in both of the plants, not only in their roots but also in their leaves. |
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| Keywords: | Copper tailings Heavy metal Chemical forms Zoysia japonica Trifolium pratense |
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