云南部分矿区及尾矿土壤和植物Cd污染调查分析  

Investigation and Analysis on Cd Contamination of Soils and Plants in Some Mine Areas and Tailings in Yunnan

作　　者：刘义富[1,2] 毛昆明[1] 

机构地区：[1]云南农业大学农学与生物技术学院,云南昆明650201 [2]云南省农业科学院粮食作物研究所,云南昆明650203

出　　处：《土壤通报》2011年第6期1486-1490,共5页Chinese Journal of Soil Science

基　　金：云南省环境工程创新人才联合培养地项目(A3003015);鲁地拉水电站土地评价项目(KX132051)资助

摘　　要：对采集的个旧与兰坪矿区不同的土壤上生长的3科7个种植物及相应的土样Cd含量进行了分析。结果表明,矿区各区域的土壤都受到不同程度的Cd污染,但不同区域受污染的程度不一;不同植物体内Cd含量差异显著,其中以蓖麻含Cd量最高,其次为水杨梅,两者Cd含量基本达到Cd超富集植物含Cd量,具有Cd污染土壤植物修复的潜力;除水杨梅外,其余植物地上部分Cd含量均低于地下部分Cd含量。说明矿区及尾矿上生长的植物并非都具有超富集能力,但均具有较强的重金属污染耐性。The Cd concentration in 7 species of plants（belong to 3 families） collected in Gejiu and Lanping mine areas and tailings in Yunnan,as well as the corresponding soil samples,were analyzed.The results showed that all mine soils were polluted by Cd,but the pollution degrees were different in varied mining areas.The concentrations of Cd in different plants were significantly different.And the highest concentration of Cd was found in Ricinus communis L.,which followed by Adubarubella Hance And the Cd concentrations in the above two plants reached the concentration of Cd hyperaccumulator.Therefore,they were potentially the phytoremediating plants in Cd contaminated soil.The concentration of Cd in aboveground part of plant was lower than that in the underground part except Adubarubella Hance.This investigation indicated that not all of the plants growing on the mining and tailings soil belonged to hyperaccumulators,but they all had strong tolerance to the heavy metal pollution.

关 键 词：镉污染 尾矿 植物修复 超富集 

分 类 号：X53[环境科学与工程—环境工程]