Position: Home > Articles > Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in the Mining Subsidence Reclamation Area
Journal of Soil and Water Conservation
2014,28
(4)
247-251
采煤沉陷复垦区重金属分布特征及生态风险评价
作 者：
郑刘根;李超;程桦;姜春露;陈永春;谢豪
单 位：
煤矿生态环境保护国家工程实验室;安徽大学资源与环境工程学院
关键词：
煤矸石充填复垦区;土壤重金属;高潜水位;生态风险评价
摘 要：
以淮南新庄孜矿煤矸石充填复垦区为研究对象,通过现场调查取样、室内测试分析等手段,对煤矸石充填复垦区不同土地利用类型、不同充填深度土壤中Cd、Cr、Cu、Zn、Pb、Mn和Hg 7种重金属的分布特征进行研究,同时采用生态风险指数法,对研究区土壤重金属潜在生态风险危害进行评价。结果表明:表层土壤中Cu、Zn、Cd、Mn和Hg 5种重金属平均值均超过当地的土壤背景值,存在不同程度的污染,且Cd污染最严重。从垂直方向来看,除Hg外土壤重金属无明显分布规律,Hg的含量随土壤深度的增加而升高。复垦区土壤重金属潜在生态风险危害严重,不同重金属潜在生态风险危害程度不同,Cd和Hg的潜在生态风险危害最大。
译 名：
Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in the Mining Subsidence Reclamation Area
作 者：
ZHENG Liu-gen;LI Chao;CHENG Hua;JIANG Chun-lu;CHEN Yong-chun;XIE Hao;Collaborative Innovation Center for Mines Environmental Remediation and Wetland Ecological Security,School of Resource and Environment Engineering,Anhui University;National Engineering Laboratory of Coal Mine Ecological Environment Protection;
关键词：
gangue filling reclamation area;;soil heavy metals;;high phreatic water level;;ecological risk assessment
摘 要：
The gangue filling reclaimed land in Huainan Xinzhuangzi coal mining area was selected as a target area to study the distribution and contamination of heavy metals(Cd,Cr,Cu,Zn,Pb,Mn and Hg)in different soil depth and different land use types by field investigation sampling,indoor test and analysis.Results indicated that the contents of Cu,Zn,Cd,Mn and Hg were higher than that in the background soil,the reclaimed soil was contaminated in varied degree and Cd pollution was severest.Except Hg,the vertical distribution of heavy metals had no regular rules.The content of Hg increased with the depth of profiles.The potential risk index showed that the soil in the study area was contaminated seriously by using ecological risk index method.
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