Spatial Variation of Soil Heavy Metals in the Beach of Lower Yellow River: A Case Study in Kaifeng Section
详细信息
- 责任者：Zhang Pengyan (Institute of Resource and Environment ; Henan University ; Kaifeng 475004 ; China) ; Qin Mingzhou
- 刊名：Geographical Research
- 出版年：2013
- 卷期：32(3)
- 关键词：土壤污染 ; soil pollution ; 重金属 ; heavy metals ; 河南 ; Henan Province
- 页码：p.421-430
- 图表：illus., 6 tables, 38 refs.
- 分类号：1800
- issnNo：ISSN1000-0585
- isbnNo：CN11-1848/P
摘要
///In this paper,the authors collected 48 soil samples in the surface levels of soil from 0～20 cm inside and outside the Yellow River beach in Kaifeng City.Based on the standard analysis methods of soil chemical composition,five heavy metals contents,including Lead(Pb),Chromium(Cr),Mercury(Hg),Arsenic(As) and Cadmium(Cd) in soil are analyzed.Three different models of single-factor pollution index,Ordinary Kriging and correlation analysis are adapted respectively,to quantificationally study soil heavy metals contents,and also to calculate their pollutants and the spatial distribution in the study area.Eventually the authors obtain the following results：1) in terms of the average content level of the five heavy metals,the average content of Cr is the highest,while those of Pb and Hg are the lowest.However,the spatial variation analysis used by the coefficients of variation demonstrated that the spatial variety of Hg content is the largest for its large variety coefficient,and the other 4 heavy metals(Pb,Cr,As and Cd) are at the similar medium levels(0.13-0.28); 2) there is a strong linear relationship between the heavy metal Pb,Cr,Hg,As,and Cd,which implies that the 5 soil heavy metals may have a same origin of the Yellow River sediment and water input; 3) the main pollution elements are Hg,As and Pb,among them,the pollution degree of Pb is moderate and its pollution range is relatively wide.As and Hg are at the third level of light pollution degree.Both Cr and Cd contents,which have not been polluted,have little difference from village to village.Cd content is at a very low level without pollutant accumulation; and 4) the spatial distribution of soil heavy metals is significantly different from the upper to lower beach within the study area.The upper beach soil is relatively clean,and the middle beach is lightly polluted;while the lower beach soil shows a significant concentration of heavy metals.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |