安徽淮北百善煤矿废弃地土壤重金属污染评价  

Assessment on heavy metal pollutions in Baishan coal mining wastelands in Huaibei,Anhui Province

作　　者：杨莎[1] 程雨蒙[1] 王雷[1] 郭传友[1] 

机构地区：[1]淮北师范大学生命科学学院,安徽淮北235000

出　　处：《江苏师范大学学报（自然科学版）》2017年第2期4-6,共3页Journal of Jiangsu Normal University：Natural Science Edition

基　　金：安徽省高校省级自然科学研究重点项目(KJ2011A254)

摘　　要：以安徽省淮北市百善煤矿废弃地5个样地类型为研究对象,测定了各样地土壤的酸碱度、营养状况及其重金属元素Cd、Cr、Cu、Pb、Zn、Ni的含量.结果显示:废弃地各样地土壤呈弱酸性至弱碱性不等,pH值为6.75~7.45.各样地土壤中N、P、K的含量处于中等偏下水平.土壤重金属单因子污染指数从大到小的排列顺序为Zn>Cd>Ni>Cr>Cu>Pb,除占压地的重金属元素Zn、Cd、Ni达到轻度污染水平外,其它重金属元素在各样地均处于清洁等级.内梅罗综合污染指数从大到小的排列顺序为占压地>撂荒地>农田>草地>林地,占压地和撂荒地的综合污染指数分别为1.324和1.084,达到了轻度污染水平,其余3个样地的综合污染指数均介于0.7~1之间,达到了警戒水平.本研究结果可以为百善煤矿废弃地的重金属污染防治和生态恢复提供科学依据.Taking 5 wastelands of Baishan coal mine in Huaibei city of Anhui Province as a research example,the pH value,nutritional status and the contents of six kinds of metal including Cd,Cr,Cu,Pb,Zn and Ni were determined.The results indicate that the soil of these wastelands are from faintly acid to weak alkaline with pH from 6.75 to 7.45.The contents of N,P,K in the soil are on or below the medium level.The values of the evaluation based on the single factor pollution index of heavy metal in the coal mining wastelands manifest the order Zn>Cd>Ni>Cr>Cu>Pb.Zn,Cd and Ni in the tied-up land are at the level of mild contamination,whereas the other heavy metals are at the level of clean status.The results of Nemerow pollution index are arranged in the descending order as the tiedup land>abandoned land>farm land>grass land>wood land.The Nemerow pollution indexes of the tied-up land and abandoned land are 1.324 and 1.084 respectively,which are at the level of mild contamination,whereas the indexes of the others are between 0.7 and 1 at the warning level.The results of this work provide a science guidance of prevention of heavy metal pollution and ecological restoration of Baishan coal mining wasteland.

关 键 词：淮北 百善煤矿 废弃地 重金属r污染评价 

分 类 号：X53[环境科学与工程—环境工程]