Li M S, Luo Y P, Su Z Y
School of Environment and Resources, Guangxi Normal University, 15 Yucai Road, Guilin 541004, China.
Environ Pollut. 2007 May;147(1):168-75. doi: 10.1016/j.envpol.2006.08.006. Epub 2006 Oct 2.
Heavy metal contamination of metal-mined soils is a widespread problem in China. In the restored (over 20 years) Lipu manganese mineland, 36 plant species from 22 families were found colonizing, some of which were planted agronomic ones. Heavy metal concentrations in tailings were very high. Minesoils were basically unpolluted, but soils in the remaining mining area and in the vicinity of tailings dumps were polluted by Cd and Mn. Measurements of metal contents in dominant plants showed they were close to those of other mineland plants. Plants tended to have a higher Cd accumulation (as reflected by Biological Accumulation Coefficient) from soil, but have a higher Mn translocation (as indicated by Biological Transfer Coefficient) to aboveground parts. The Chinese chestnut and sugarcane cultivated on the reclaimed mineland were not safe for human consumption, and this agricultural restoration pattern should be carefully reconsidered.
金属矿土壤的重金属污染在中国是一个普遍存在的问题。在已恢复（超过20年）的荔浦锰矿区，发现有来自22个科的36种植物定殖，其中一些是种植的农艺植物。尾矿中的重金属浓度非常高。矿土基本未受污染，但剩余矿区和尾矿堆场附近的土壤受到镉和锰的污染。对优势植物中金属含量的测量表明，它们与其他矿区植物的含量相近。植物倾向于从土壤中积累更高的镉（以生物积累系数表示），但向地上部分的锰转运更高（以生物转移系数表示）。在复垦矿区种植的板栗和甘蔗供人类食用不安全，这种农业恢复模式应仔细重新考虑。
