Journal
ENVIRONMENTAL GEOLOGY
Volume 40, Issue 7, Pages 902-907Publisher
SPRINGER
DOI: 10.1007/s002540100256
Keywords
copper accumulation; Polygonum microcephalum; Rumex hastatus
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A survey was made of copper mining spoils in Yunnan Province, southwest China. polygonum microcephalum and Rumex hastatus were found to grow extensively on copper mining spoils in Yunnan Province as representatives of typical high-elevation copper flowers. Plants and their associated soil samples collected from several copper mines in the Province were analyzed for,er. Tt is found that both plant species can grow well on mining spoils rich in copper but with medium nutrient supply. P. microcephalum accumulated more copper in its organs than R. hastatus. The copper concentration in the roots of both species tended to increase with copper increase in the substrates. However, the tendency for the levels of copper in the leaves of both species to increase linearly with soil copper increase is not clear. This study suggests that both species may have some potential for phytostabilization of metal-contaminated soils and for biogeochemical prospecting.
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