HUANG Kai,ZHANG Xue-jiao,FENG Yuan,et al.Evaluation of Heavy Metal Pollution in Soil of a Tailings Reservoir in Henan and Accumulation of Heavy Metals in the Dominant Plants[J].HEILONGJIANG AGRICULTURAL SCIENCES,2018,(01):51-56.[doi:10.11942/j.issn1002-2767.2018.01.0051]
河南省尾矿库土壤重金属污染评价及优势植物重金属累积特征
- Title:
- Evaluation of Heavy Metal Pollution in Soil of a Tailings Reservoir in Henan and Accumulation of Heavy Metals in the Dominant Plants
- 文章编号:
- 1002-2767(2018)01-0051-06
- Keywords:
- tailing pond; heavy metals; pioneer plant; enrichment
- 分类号:
- X753
- 文献标志码:
- A
- 摘要:
- 为促进尾矿库的污染治理及生态修复,通过研究河南省尾矿库土壤重金属含量,以及库区优势植物对Pb、Zn、Cd、Cr、Cu等5种重金属的富集能力与转移特征,筛选出适应该地区生态修复的先锋植物。结果表明:尾矿库土壤中重金属均超过河南省土壤背景值,以Cd超标最严重;Cd与Pb,Cu与Zn、Cr呈现极显著相关,同源性较高;Cd的生态风险程度为严重,整体区域处于很强生态风险等级;优势植物中以草本植物为主,多为乡土植物,植物体内重金属的Cr和Cd的含量出现超标,其中牡荆、芦苇、艾草、盐肤木等植物对尾矿库区重金属有很好的耐性,可作为矿区生态修复的先锋植物。
- Abstract:
- In order to promote pollution control and ecological restoration of tailings reservoir,through studying contents of heavy meta soil in a tailings reservoir of Henan and enrichment and transfer characteristics of 5 heavy metals,such as Pb,Zn,Cd,Cr and Cu,in the dominant plants of the reservoir area,screened out the pioneer plants suitable for ecological restoration in the region.The results showed that the heavy metals in soil had all exceeded soil background value of Henan province,Cd was over standard most seriously; Cd were highly correlated with Pb,Cu,Zn and Cr,had high homology; the ecological risk of Cd was serious,the whole area was in a strong ecological risk level; herbaceous plants were mainly plants in the dominant plants,most of them were the native plants,the contents of Cr and Cd of heavy metals in plants exceeded the standard,the Vitex,reed,wormwood,Rhus plants had a better tolerance to heavy metals in tailings reservoir,can be used as a pioneer plant for ecological restoration in mining area.
参考文献/References:
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备注/Memo
收稿日期:2017-11-16基金项目:国家自然科学基金资助项目(51008118)第一作者简介:黄凯(1992-),男,河南省濮阳市人,在读硕士,从事环境科学与资源利用研究。E-mail:924286353@qq.com。通讯作者:张发文(1981-),男,河南省信阳市人,博士,副教授,从事固废处理与资源化研究。E-mail:7870271@qq.com。