Spatial Variability and Evaluation of Soil Heavy Metal Pollution in Jiaozuo City

LI Yan-li; XIAO Chun-yan; WANG Shou-quan; LIU Kun-peng

doi:10.13961/j.cnki.stbctb.2014.03.054

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Spatial Variability and Evaluation of Soil Heavy Metal Pollution in Jiaozuo City

- Spatial Variability and Evaluation of Soil Heavy Metal Pollution in Jiaozuo City
- Bulletin of Soiland Water Conservation Vol. 33, Issue 3, Pages: 271-276(2014)
- 作者机构：
  
  1. 河南理工大学资源环境学院,河南,焦作,454000
  2. 河海大学环境学院,江苏,南京,210098
  3. 苏州科技学院环境与科学工程学院,江苏,苏州,215009
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.03.054
  CLC：
- Published：2014
- 稿件说明：
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LI Yan-li, XIAO Chun-yan, WANG Shou-quan, et al. Spatial Variability and Evaluation of Soil Heavy Metal Pollution in Jiaozuo City[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 271-276.
DOI：

LI Yan-li, XIAO Chun-yan, WANG Shou-quan, et al. Spatial Variability and Evaluation of Soil Heavy Metal Pollution in Jiaozuo City[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 271-276. DOI： 10.13961/j.cnki.stbctb.2014.03.054.

摘要

为揭示人类活动对土壤环境质量的影响

在河南省焦作市3个城区采集了44个表层土壤样品。利用单因子指数法和内梅罗综合指数法评价了土壤表层重金属的污染程度。并采用地统计学方法对表层土壤样品Cr

Pb共4种重金属的空间变异结构和分布格局进行了分析。结果表明

Pb的超标率分别为47.73%

22.73%

土壤Cr

Cd污染较为严重。3个城区Cr和Cd的分布特征总趋势为:山阳区 > 中站区 > 解放区

Pb和Cu的分布特征总趋势为:解放区 > 山阳区 > 中站区。土壤Cr

Cd和Pb之间以及Cu和Pb之间呈显著相关。空间变异结构分析表明

Cd具有极强的变异性

Cr具有较强的变异性

Cu和Pb是中等变异强度。半方差函数模型拟合结果显示Cr具有较强的空间自相关性

Pb具有中等程度的空间自相关性

Cd和Cu具有较弱的空间自相关性。在此基础上

元素Pb呈环状

Cu呈岛状

Cr和Cd呈带状分布。

Abstract

In order to survey the effect of human activities on soil environmental quality

44 top soil samples were taken in three areas of Jiaozuo City. The single pollution index and the composite pollution index were used to assess the soil heavy metal pollution

and geostatistics method was applied to evaluate the spatial variation structure and distribution of four heavy metals(Cr

Cd and Pb) in top soils. Results showed that Cr was ranked first and Cd was ranked second in pollution index and overall standard rate

with the overall standard rates being 47.73% and 22.73%

respectively. The concentrations of Cr and Cd were highest in Shanyang District

next in Zhongzhan District

and lowest in Jiefang District. The concentrations of Cu and Pb were highest in Jiefang District

followed by Shanyang District

and lowest in Zhongzhan District. The concentrations of Cr

Cd and Pb were significantly correlated and likewise

Cu and Pb were significantly correlated. The four elements

in order of decreasing spatial variability

were Cd

Cu and Pb. Results from semivariance analysis showed that Cr had a relatively strong spatial-related variability; Pb

a medium spatial-related variability; and Cd and Cu

a relatively weak spatial-related variability. The distribution of Pb was shown as ring; Cu

as island; and Cr and Cd

as ribbon.

关键词

Keywords

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