Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS

Heavy Metals in Plants Growing on Ni /Cu Mining Areas in Deser t,Nor thwest China and the Adaptive Pioneer Species

  • Center for Environmental Remediation, Institute of Geographic Sciences and Natural
    Resources Research, CAS, Beijing 100101, China

Received date: 2007-02-03

  Revised date: 2007-03-03

  Online published: 2007-05-15


The types and metal concentrations of the plant communities in Jinchang’s Ni /Cu mining areas in desert of Northwestern China were investigated.The number of plant species in different zone is in the order:strip mine ( 20 species) >around new tailing pond zone ( 13 species) >around strip mine zone ( 8 species) >around old tailing pond zone ( 6 species) >old tailing pond ( 5 species) .Thirty-two species belonging to 30 genera and 14 families were found growing on the spoil heap, including 9 dominant species:Echinops gmelini Turcz, Asterothamnus centraliasiaticus Novopokr, Crepis flexuosa ( Ledeb.) Clarke, Mulgedium tataricum ( L.) DC., Phragmites communis Trin., Stipa sp., Peganum harmala L., Nitraria sphaerocarpa Maxim., and Ceratocarpus arenarius L.The investigation showed that E. gmelini, C. flexuosa, M. tataricum, P. communis and C. densa were adaptive pioneer species, and planting Stipa sp. and C. arenarius could be used to remediate contaminated lands.The average Cu concentration in the aboveground plants was 52.9mg/kg, which was higher than the average concentrations of other metals.Ni concentrations in the aboveground plants were 5.1 ~155.6mg/kg, and the average value was 39.1mg/kg.Ni and Cu concentrations in the aboveground of C. arenarius were the highest, 155.6 and 239.0 mg/kg, respectively.The result of regressive analysis indicated that uptake and enrichment of Ni by the plants was closely associated with Cu, and Ni concentrations in the plants were enhanced with the increased Cu concentration.

Cite this article

LIAO Xiao-yong, CHEN Tong-bin, YAN Xiu-lan, XIE Hua, ZHAI Li-mei, . Heavy Metals in Plants Growing on Ni /Cu Mining Areas in Deser t,Nor thwest China and the Adaptive Pioneer Species[J]. JOURNAL OF NATURAL RESOURCES, 2007 , 22(3) : 486 -495 . DOI: 10.11849/zrzyxb.2007.03.019


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