| 广西典型矿区中植物对Cu、Mn和Zn的富集特征与潜在的Mn超富集植物 |
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| 引用本文： | 范稚莲,莫良玉,陈同斌,翟丽梅,雷梅,黄安奇,黎桦. 广西典型矿区中植物对Cu、Mn和Zn的富集特征与潜在的Mn超富集植物[J]. 地理研究, 2007, 26(1): 125-131. DOI: 10.11821/yj2007010016 |
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| 作者姓名： | 范稚莲 莫良玉 陈同斌 翟丽梅 雷梅 黄安奇 黎桦 |
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| 作者单位： | 广西大学农学院,南宁,530005;中国科学院地理科学与资源研究所环境修复中心,北京,100101 |
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| 基金项目： | 广西大学博士后启动基金项目 |
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| 摘 要： | 本文对广西锰矿区、铅锌矿区和金矿区土壤和植物的重金属含量进行了调查分析。在所调查的24种植物中,Cu含量在30.8~183.8mg/kg范围,Mn含量在143.6~27514mg/kg范围,Zn含量在113.3~1773mg/kg范围。相对于正常条件下生长的普通植物来说,其Cu、Mn和Zn含量都较高。生长在锰矿区的狗牙根、香附子和菜蕨中Mn的含量分别达到27514、16144和11516mg/kg,相应的富集系数为11.4、6.7和4.8。这3种植物均达到Mn超富集植物的相关标准,因此是潜在的Mn超富集植物。
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| 关 键 词： | 土壤 植物种类 重金属 矿区 超富集植物 锰 |
| 文章编号： | 1000-0585（2007）01-0125-07 |
| 收稿时间： | 2006-04-08 |
| 修稿时间： | 2006-04-08 |
Accumulation of Cu, Mn and Zn in plants grown in areas near three abandoned mines in Guangxi and the discovery of potential Mn-hyperaccumulators |
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| FAN Zhi-lian,MO Liang-yu,CHEN Tong-bin,ZHAI Li-mei,LEI Mei,HUANG An-qi,LI Hua. Accumulation of Cu, Mn and Zn in plants grown in areas near three abandoned mines in Guangxi and the discovery of potential Mn-hyperaccumulators[J]. Geographical Research, 2007, 26(1): 125-131. DOI: 10.11821/yj2007010016 |
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| Authors: | FAN Zhi-lian MO Liang-yu CHEN Tong-bin ZHAI Li-mei LEI Mei HUANG An-qi LI Hua |
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| Affiliation: | 1. Agricultural College, Guangxi University, Nanning 530005, China;2. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China |
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| Abstract: | In order to screen the potential hyperaccumulators,the concentrations of Cu,Mn and Zn in 24 dominant plants grown in areas near abandoned Mn,Pb/Zn and Au mines in Nanning City of Guangxi Province were investigated.The results show that most plants contained high concentration of metals resulting from the increased metal concentrations in the soils near the mines.Mn concentration of Mn-mine soil(2415.0 mg/kg),which was 14.0 times greater than Mn background value of Guangxi soil,was higher than that of Pb/Zn-mine soil(687.5 mg/kg) and Au-mine soil(487.2 mg/kg).Most of the investigated plants grown on the Mn mine contained higher concentration Mn in the aboveground tissue(909.0~27514.0 mg/kg) than that(143.6~4388.0 mg/kg) grown on other mines.Among the plants investigated,three species of plants,Cynodon dactylon,Cyperus rotundus and Callipteris esculenta,grown on Mn-mine could hyperaccumulate Mn in their tissues,with the Mn contents and bioconcentration factors to Mn being 27514.0 mg/kg~()and 11.4,16144.0 mg/kg and 6.7,and 11516.0 mg/kg and 4.8,respectively.The plants investigated grown on Pb/Zn mine contained more Zn(252.8~1571.0 mg/kg) and Mn(143.6~4388.0 mg/kg) than that(113.3~642.8 mg/kg and 247.1~1940.0 mg/kg for Mn and Zn,respectively) grown on Au mine.The Cu concentration(30.8~183.8 mg/kg) of the plants grown on the three mines was lower than that of Mn and Zn.The concentrations of Cu,Zn and Mn of food crops grown on the mines were higher than that in normal plants,with potential threats to humans and livestock health.The results indicate that the three plant species,Cynodon dactylon,Cyperus rotundus and Callipteris esculenta,grown on these mines accumulated much higher concentration of heavy metals,and they were discovered to be potential Mn-hyperaccumulators. |
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| Keywords: | abandoned mine heavy metal hyperaccumulator Mn plant soil |
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