铅锌矿区毛竹林土壤重金属的分布特征

doi:10.3964/j.issn.1000-0593(2013)07-1877-04

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摘要：铅锌矿开采对周边林地及农田土壤造成了较为严重的重金属污染。以我国分布面积广、经济效益高的毛竹林为对象，研究了铅锌矿区周边林分土壤中Cu，Zn，Pb和Cd四种重金属的分布特征，结果表明，毛竹根围土壤Cu，Zn，Pb和Cd含量分别为38.10~50.87，92.24~137.75，32.04~46.22和0.03~0.35 mg·kg^-1，明显低于非根围土壤，说明竹子发达的鞭根系统和频繁的人为抚育管理对土壤重金属浓度和分布有较大影响;从距离和坡位两个因素的影响来看，随距污染源距离增大，土壤中重金属含量呈下降趋势，且多以中坡位含量较高，上坡位较低。

关键词：铅锌矿;毛竹;土壤重金属;根围

Abstract：The woodland and farmland soil nearby lead-zinc mine has been polluted seriously due to the mining. Bamboo forest of Phyllostachys edulis has high economic value and is distributed widely in China. The Phyllostachys edulis forest nearby lead-zinc mine was selected, and the distribution characteristics of main heavy metal Cu, Zn, Pb and Cd in soil were studied. The result showed that the concentration of Cu, Zn, Pb and Cd in bamboo rhizome zone reached 38.10~50.87, 92.24~137.75, 32.04~46.22 and 0.03~0.35 mg·kg^-1 respectively, which was lower than that in non-rhizome zone soil significantly. This result indicated that the distribution and concentration of heavy metals in soil were influenced partly by bamboo developed rhizome-root system and human frequent tending management. About the influence of distance from pollution source and slope position, the heavy metals content in soil showed a decreasing trend as the distance increased, and for most elements, the content in soil of the middle slope position was high, and was a little lower in upper slope position.

Key words：Lead-zinc mine;Phyllostachys edulis;Soil heavy metal;Rhizome zone

收稿日期: 2012-10-29 修订日期: 2013-01-11

中图分类号:

S714.5

通讯作者: 范少辉 E-mail: fansh@icbr.ac.cn

引用本文:

苏文会，封焕英，范少辉^*，李兴军，许庆标 . 铅锌矿区毛竹林土壤重金属的分布特征 [J]. 光谱学与光谱分析, 2013, 33(07): 1877-1880.
SU Wen-hui, FENG Huan-ying, FAN Shao-hui^*, LI Xing-jun, XU Qing-biao . Distribution Characteristics of Soil Heavy Metals in Bamboo Forest of Phyllostachys edulis on Lead-Zinc Orefield . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(07): 1877-1880.

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