摘要
以大田县铁矿废弃地为对象,研究了铁矿废弃地不同修复模式土壤重金属元素Cu、Zn、Pb、Ni和Cr的污染情况,并进行土壤重金属元素污染等级评价。结果表明:(1)不同修复模式土壤Cu、Zn、Pb和Cr重金属元素均超过相应福建土壤背景值,其中Pb含量超过国家土壤背景值。(2)Cu和Zn极显著相关,表明Cu和Zn具有一定的同源性。(3)不同恢复模式土壤重金属综合评价值排序为R0>R1>R2>R3>R4>CK。(4)从单因子污染指数来看,Pb元素污染指数最高,其次为Zn元素,其他3种元素污染较小。R0和R1模式属重度污染;R2和R3模式属轻度污染;R4模式属警戒;CK模式属安全。
Soil Cu,Zn,Pb,Ni & Cr concentrations pollution characteristics from different restoration modes in the abandon area of iron mine in Datian County were investigated.Moreover,soil pollution risk was evaluated using Nemerow index.Result shows that: 1) The concentrations of Cu,Zn,Ni & Cr from different restoration modes are much higher than the background level of Fujian,additionly,the concentrations of Pb even exceeded national environmental quality standard for soils.2) The correlation analysis indicates that significant correlation between Cu & Zn,which suggested that similar source between Cu & Zn in a certain extent.3) The order of comprehensive indexes in soil heavy metal from different restoration modes: R0>R1>R2>R3>R4>CK.4) The single factor indexes indicated that polluted index of Pb is the most serious,next is Zn,and the others are less polluted.The Nemerow synthesis pollution index method shows that R0 & R1 mode belong to heavy pollution level,R2 & R3 mode belong to light pollution level,R4 mode belong to alert level and CK mode belong to safe level.
作者
黄石德
Huang Shide(Fujian Provincial Academy of Forestry Science,Fuzhou 350012,China)
出处
《防护林科技》
2019年第3期5-7,共3页
Protection Forest Science and Technology
基金
福建省林业科研项目:铁矿废弃地植被恢复技术的研究
福建省属公益类项目:长汀中轻度侵蚀区生态经济型模式综合效益稳定性研究
国家林业局南方山地用材林培育实验室资助项目
关键词
铁矿废弃地
不同恢复模式
土壤重金属
内梅罗指数
abandon area of iron mine
different restoration modes
soil heavy metals
Nemerow index
作者简介
黄石德(1982-),男,福建仙游人,博士,高级工程师,从事植被恢复研究,Email:hsd9876@126.com.
