RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2010, Vol. 19 >> Issue (2): 220-.

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CHARACTERISTICS OF COMPOSITION AND ACCUMULATION OF HEAVY METAL OF NATURAL PLANT ON DANGPING WOLFRAM MINE TAILING WASTELAND AREAS OF DAYU COUNTY IN JIANGXI PROVINCE

LIU Zugen|PENG Kunguo|FANG Hongya|LI Huimin|LIAO Bin   

  1. (Jiangxi Provincial Institute of Environmental Protection Sciences| Nanchang 330029| China)
  • Online:2010-02-20

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Abstract:

The characteristics of composition and accumulation of natural plant was investigated in Dangping nationalized wolfram mine tailing wasteland areas of Dayu County，and the purpose of study was to provide some scientific foundations for revegetation and phytoremediation of heavymetalspolluted soil for mine area in future.The result showed that there were 20 species of natural colonized plants on wolfram mine tailing yard，subordinated to 20 genera and 15 families，and 6 wood species and 14 herb species among them.The natural plants did not grow well and mainly distributed on sandsoil region of humidity or water.Concentrations of heavy metals followed the order Zn>Pb>Cu>Cd of the same plant in tailing wasteland areas.Hyperaccumulators did not be found，and most of plants were tolerant plant of Cu，Pb，Zn and Cd in tailing wasteland areas.Cd contamination of soil was serious in Dangping nationalized wolfram mine tailing wasteland areas.〖WTBX〗Equisetum hiemale〖WTBZ〗 and 〖WTBX〗Pteris vittata〖WTBZ〗 were repellence plant of Cd，which could be used of the pioneer plants of revegetation for soil by Cd contamination.〖WTBX〗Chenopodium ambrosioides〖WTBZ〗 and 〖WTBX〗Cyperus rotundus〖WTBZ〗 were Cd accumulation plant，which could be used of the phytoremediation for soil by Cd contamination.The other plants were repellent plant of Cd，which could be used of the phytostabilization for soil by Cd contamination.

Key words: wolfram mine tailing wasteland areas/ natural plants/heavy metal/ accumulation

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