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银中杨各部位对Cd、Zn、Pb的富集特性

姜礅 王月月 严善春

姜礅, 王月月, 严善春. 银中杨各部位对Cd、Zn、Pb的富集特性[J]. 北京林业大学学报, 2018, 40(1): 83-88. doi: 10.13332/j.1000-1522.20170191
引用本文: 姜礅, 王月月, 严善春. 银中杨各部位对Cd、Zn、Pb的富集特性[J]. 北京林业大学学报, 2018, 40(1): 83-88. doi: 10.13332/j.1000-1522.20170191
Jiang Dun, Wang Yue-yue, Yan Shan-chun. Accumulation characteristics in all parts of Populus alba 'Berolinensis' to cadmium, zinc, and lead[J]. Journal of Beijing Forestry University, 2018, 40(1): 83-88. doi: 10.13332/j.1000-1522.20170191
Citation: Jiang Dun, Wang Yue-yue, Yan Shan-chun. Accumulation characteristics in all parts of Populus alba 'Berolinensis' to cadmium, zinc, and lead[J]. Journal of Beijing Forestry University, 2018, 40(1): 83-88. doi: 10.13332/j.1000-1522.20170191

银中杨各部位对Cd、Zn、Pb的富集特性

doi: 10.13332/j.1000-1522.20170191
基金项目: 

东北林业大学学术名师支持计划 010602071

详细信息
    作者简介:

    姜礅,博士生。主要研究方向:昆虫化学生态。Email: 821880041@qq.com 地址:150040 黑龙江省哈尔滨市和兴路26号东北林业大学林学院

    责任作者:

    严善春,教授,博士生导师。主要研究方向:昆虫化学生态。Email: yanshanchun@126.com 地址:同上

  • 中图分类号: S713

Accumulation characteristics in all parts of Populus alba 'Berolinensis' to cadmium, zinc, and lead

  • 摘要: 目的为探明银中杨各部位对不同重金属的富集特性。方法本研究通过用3种不同含量的镉(Cd,0.5、1.5、2.5 mg/kg)、锌(Zn,300、500、700 mg/kg)或铅(Pb,300、500、700 mg/kg)分别处理盆栽一年生银中杨的土壤,分析银中杨根、茎、叶对Cd、Zn和Pb的富集量和富集系数。结果银中杨根、茎、叶对Cd、Zn和Pb的富集量均与土壤中相应的重金属含量呈极显著的正相关(P < 0.01)。高含量Cd处理下的根、茎、叶对Cd的富集系数均不同程度的低于低含量处理;高含量Zn处理下叶对Zn的富集系数和高含量Pb处理下叶对Pb的富集系数也均不同程度的低于低含量处理,但根、茎对Zn的富集系数对Zn的处理含量不敏感,而根、茎对Pb的富集系数却对Pb的处理含量呈依赖性。银中杨各部位之间对Cd的富集量未表现出任何规律,但对Cd的富集系数,在低含量下一致,在高含量下根显著低于茎和叶(P < 0.05)。Zn低含量处理下的叶、根、茎和高含量处理下的根、叶、茎对Zn的富集量和富集系数均依次有不同程度的降低。Pb各含量处理均使根对Pb的富集量和富集系数显著高于茎和叶(P < 0.05)。结论说明土壤中的Cd、Zn和Pb含量影响银中杨对其的富集,且呈根茎叶特异性。银中杨各部位对Cd的富集情况表现为茎和叶的富集阈限高于根部;对Zn的富集情况在低含量时表现为叶>根>茎,在中、高含量时表现为根>叶>茎;对Pb的富集主要集中在根。

     

  • 图  1  银中杨各部位的Cd含量(A)和对Cd的富集系数(B)

    不同小写字母表示银中杨相同部位不同处理之间差异显著(P < 0.05);不同大写字母表示银中杨相同处理不同部位之间差异显著(P < 0.05);Cd0.5、Cd1.5、Cd2.5分别表示Cd含量为0.5、1.5、2.5 mg/kg。下同。

    Figure  1.  Content (A) and bio-concentration factor (B) of Cd in each part of Populus alba 'Berolinensis'

    Different lowercase letters mean there is significant difference among varied treatment concentrations in the same part (P < 0.05); different capital letters mean there is significant difference among varied parts in the same treatment concentrations (P < 0.05); Cd0.5, Cd1.5, Cd2.5 represent the Cd content of 0.5, 1.5, 2.5 mg/kg, respectively. The same below.

    图  2  银中杨各部位的Zn含量(A)和对Zn的富集系数(B)

    Zn300、Zn500、Zn700分别表示Zn含量为300、500、700 mg/kg。

    Figure  2.  Content (A) and bio-concentration factor (B) of Zn in each part of Populus alba 'Berolinensis'

    Zn300, Zn500, Zn700 represent the Zn content of 300, 500, 700 mg/kg, respectively.

    图  3  银中杨各部位的Pb含量(A)和对Pb的富集系数(B)

    Pb300、Pb500、Pb700分别表示Pb含量为300、500、700 mg/kg。

    Figure  3.  Content (A) and bio-concentration factor (B) of Pb in each part of Populus alba 'Berolinensis'

    Pb300, Pb500, Pb700 represent the Pb content of 300, 500, 700 mg/kg, respectively.

    表  1  银中杨各部位对重金属的富集量与土壤中重金属含量的相关性

    Table  1.   Correlations between the bio-accumulation amount of heavy metals in each part of Populus alba 'Berolinensis' and heavy metal content in the soil

    项目
    Item
    CdZnPb
    相关系数Correlation
    coefficient
    P相关系数Correlation
    coefficient
    P相关系数Correlation
    coefficient
    P
    根Root0.729<0.010.937<0.010.972<0.01
    茎Stem0.916<0.010.897<0.010.973<0.01
    叶Leaf0.944<0.010.937<0.010.797<0.01
    下载: 导出CSV
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  • 收稿日期:  2017-06-02
  • 修回日期:  2017-11-01
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