| 金华市郊杂草对土壤重金属元素的吸收与富集作用(Ⅰ)-6种重金属元素在杂草和土壤中的含量分析 |
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| 引用本文： | 郭水良,黄朝表,边媛,林国平.金华市郊杂草对土壤重金属元素的吸收与富集作用(Ⅰ)-6种重金属元素在杂草和土壤中的含量分析[J].上海交通大学学报(农业科学版),2002,20(1). |
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| 作者姓名： | 郭水良 黄朝表 边媛 林国平 |
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| 作者单位： | 浙江师范大学,生命与环境科学学院,金华,321004 |
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| 基金项目： | 浙江省测试基金“外来杂草对重金属吸收与富集作用”项目 (0 0 0 66)一部分，同时得到本校“生态学”重点学科经费资助 |
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| 摘 要： | 对金华市郊土壤 -杂草中 Cd、Cr、Cu、Mn、Pb和 Zn6种重金属元素含量测定和统计表明 :(1 )杂草不同器官内 6种重金属元素的平均含量由高到低分别为根 >叶 >茎 >花果 ,元素在植物体内的含量由高到低分别为 Zn>Mn>Pb>Cu>Cr>Cd,富集系数由大到小分别为 Cd>pb>Zn>Mn>Cu>Cr;(2 )空心莲子草 (Alternanthera philoxeroides)、光风轮(Clinopodium confinis)、水苦荬 (Veronica undulata)、石龙芮 (Ranunculusjaponicus)、水蓼 (Polygonum hydropiper)和水芹(Onanthe ajvanica)等能够耐较强的重金属污染 ,其中空心莲子草根、茎、叶中 Zn的含量可高达 1 699.2 8mg/kg、1 1 0 8.77mg/kg和 75 3 .0 8mg/kg,根中 Mn含量达 1 2 68.48mg/kg,水蓼叶中 Mn的含量可达 1 61 6.71 mg/kg;(3 )在重金属严重污染的环境中生长的杂草 ,不仅体内重金属含量上升 ,而且对重金属的富集系数也增高。
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| 关 键 词： | 重金属 杂草 富集系数 |
On absorption and accumulation of six heavy metal elements of weeds in Jinhua suburb-Ⅰ Survey on content of six heavy metal elements in weeds and soil |
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| GUO Shui liang,HUANG Chao biao,BIAN Yuan,LIN Guo ping.On absorption and accumulation of six heavy metal elements of weeds in Jinhua suburb-Ⅰ Survey on content of six heavy metal elements in weeds and soil[J].Journal of Shanghai Jiaotong University (Agricultural Science),2002,20(1). |
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| Authors: | GUO Shui liang HUANG Chao biao BIAN Yuan LIN Guo ping |
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| Abstract: | The contents of six heavy metal elements including Mn,Zn,Cr,Cu,Pb and Cd in 51 weed samples and 33 sites collected from Jinhua suburb were determined and numerically analyzed. The results are as follows:(1)The organs followed an order as roots>leaves>stems>inflorescence and fruit based on their average concentrations of six elements; The elements ranked as Zn>Mn>Pb>Cu>Cr>Cd according to their concentrations in weeds,the accumulation coefficients ranked as Cd>Pb>Zn>Mn>Cu>Cr in weeds;(2)Alternanthera philoxeroides, Clinopodium confines, Veronica undulata, Ranunculus japonicus, Polygonum hydropiper and Onanthe javanica have higher endurance to the contaminations by heavy metal elements. In Alternanthera philoxeroides, the concentrations of Zn are as high as 1699.28mg/kg, 1108.77mg/kg, 753.08mg/kg in root, stem and leaves respectively,that of Mn was 1268.48mg/kg high in roots. In Polygonum hydropiper,the concentration of Mn is as high as 1616.71mg/kg;(3)Not only the concentrations, but also the accumulation coefficients were higher in the weeds growing in contaminated environments. |
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| Keywords: | heavy metal elements weed accumulation coefficient |
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