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Heavy metal contents and enrichment characteristics of dominant plants in wasteland of the downstream of a lead-zinc mining area in Guangxi, Southwest China
Guangxu Zhu;  Huayun Xiao;  Qingjun Guo;  Bo Song;  Guodi Zheng;  Zhongyi Zhang;  Jingjing Zhao;  Chukwunonso PeterOkoli
2018
发表期刊Ecotoxicology and Environmental Safety
卷号151页码:260-265
摘要

A field investigation on the content of heavy metals in soils and 17 kinds of dominant plants from wasteland of the downstream of a Pb-Zn mine in Northwest Guangxi Zhuang Autonomous Region was carried out. The absorption and accumulation characteristics of heavy metals between plants and soil were compared, and the candidate species for ecosystem restoration of the area were selected. The results indicated that the soils had been subjected to pollution of heavy metals in varying degrees. The concentrations of Cd, Pb, Zn were 46.5, 57.3 and 23.7 times higher than their corresponding background values, respectively. The contents of Cd, Pb and Zn in the most analyzed plants exceed the normal ranges and the phytotoxic level. C. crepidioides, S. nigrum, B. pilosa, C. Canadensis, A. conyzoides, I. denticulata and E. crusgali showed strong capability in accumulation and transport of Cd, and they could be used as good candidates for Cd- phytoextraction. Among which, Cd concentration in the aerial part of C. crepidioides exceeded the threshold of Cd-hyperaccumulator. Thus, C. crepidioides demonstrated the basic characteristics of a Cd-hyperaccumulator. The lower translocation ratios for Cd, Cu, Zn and Pb in P. vittata and C. chinensis make them suitable for phytostabilization in the study area.

关键词Dominant Plants pb-zn Mine heavy Metal Pollution phytoremediation cd-hyperaccumulator
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8719
专题环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.College of Biology and Environment Engineering, Guiyang University, Guiyang 550005, China
3.Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
4.College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
推荐引用方式
GB/T 7714
Guangxu Zhu;Huayun Xiao;Qingjun Guo;Bo Song;Guodi Zheng;Zhongyi Zhang;Jingjing Zhao;Chukwunonso PeterOkoli. Heavy metal contents and enrichment characteristics of dominant plants in wasteland of the downstream of a lead-zinc mining area in Guangxi, Southwest China[J]. Ecotoxicology and Environmental Safety,2018,151:260-265.
APA Guangxu Zhu;Huayun Xiao;Qingjun Guo;Bo Song;Guodi Zheng;Zhongyi Zhang;Jingjing Zhao;Chukwunonso PeterOkoli.(2018).Heavy metal contents and enrichment characteristics of dominant plants in wasteland of the downstream of a lead-zinc mining area in Guangxi, Southwest China.Ecotoxicology and Environmental Safety,151,260-265.
MLA Guangxu Zhu;Huayun Xiao;Qingjun Guo;Bo Song;Guodi Zheng;Zhongyi Zhang;Jingjing Zhao;Chukwunonso PeterOkoli."Heavy metal contents and enrichment characteristics of dominant plants in wasteland of the downstream of a lead-zinc mining area in Guangxi, Southwest China".Ecotoxicology and Environmental Safety 151(2018):260-265.
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