贵州万山汞矿区自然土壤汞污染特征

被引：16

作者：

戴智慧 ^{[1
,2
]}

冯新斌 ^{[1
]}

李平 ^{[1
]}

仇广乐 ^{[1
]}

商立海 ^{[1
]}

机构：

[1] 中国科学院地球化学研究所环境地球化学国家重点实验室

[2] 中国科学院研究生院

来源：

生态学杂志 | 2011年 / 30卷 / 05期

关键词：

总汞; 自然土壤; 空间分布; 汞矿区;

D O I：

10.13292/j.1000-4890.2011.0147

中图分类号：

X53 [土壤污染及其防治];

学科分类号：

082803 ; 120405 ;

摘要：

为阐明万山汞矿区自然土壤汞的污染情况,以汞矿开采冶炼区为起点,沿敖寨河和下溪河等间距(4 km)分层采集0～30 cm厚度的河滩土、灌木土和林地土,测定了其汞含量,分析了自然土壤汞的空间分布特征。结果表明,矿区同种植被覆盖类型的土壤总汞的含量变化范围较大,河滩土为0.16～389 mg.kg-1、灌木土为0.09～312 mg.kg-1、林地土为0.05～299 mg.kg-1,空间分布特征表现为随距污染源距离的增加而降低;同一采样区内河滩土、灌木土、林地土中土壤总汞的含量依次降低,同一采样点的垂向剖面上总汞含量一般从表层向下依次降低。

引用

页码：902 / 906

页数：5

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