铅锌矿区植物对重金属吸收和富集特征研究  

Absorption and Accumulation Characteristics of Heavy Metals by Plants in Lead-Zinc Mining Area

作　　者：毛海立[1] 龙成梅[1] 陈贵春[1] 邹洪涛[1] 钟才宁[1] 

机构地区：[1]黔南民族师范学院化学与化工系,贵州都匀558000

出　　处：《环境科学与技术》2011年第12期114-118,共5页Environmental Science & Technology

基　　金：贵州省教育厅自然科学研究项目(黔教科2008093号)

摘　　要：通过实地调查分析贵州都匀牛角塘铅锌矿区土壤中重金属Pb、Cu、Cd的含量,采集9种矿区常见优势植物,对比植物对Pb、Cu和Cd的吸收、转运和富集特征。结果表明,矿区土壤受Pb和Cd两种金属污染严重,植物体内Pb、Cd含量都超过正常范围;在调查的9种植物中,桑科的地果地上部分Pb、Cd的含量最高,富集系数1.32、0.96,转运系数分别达到2.64、2.96,表现出对Pb、Cd良好的转运和富集特征,可作为Pb、Cd污染土壤生态恢复的先锋物种;醉鱼草和野菊花体内三种元素含量不高,富集系数大都小于0.5,但转运系数值均接近或超过1,表现了良好的耐性,对污染土壤的植物修复具有潜在的应用价值。上述植物体内重金属含量均未能达到超富集植物的含量标准。A field survey on the content of heavy metals in soils and plants in lead-zinc mining area of Duyun Niujiaotang was carried out, and the absorption and accumulation characteristics of heavy metals between plants and soil were compared. Results showed that the soils and plants in the mining area were highly contaminated by Cd and Pb. Among 9 species of the collected herbaceous plants, the contents of Pb, Cd in the stem and leaf of Ficus tikoua Bur are the highest, with BCF 1.32 and 0.96 separately, and translation coefficient 2.64 and 2.96 separately. Buddleja Lindleyana Fortune and Chrysanthemum indicum L had low tolerance of Pb, Cu and Cd, with BCF less than 0.5 mostly, but the translation coefficient approximate or higher than 1. The above 4 plants have a better potential and practical use in phytoremediation as their favorable resistibility to Pb and Cd, and heavy metals content in the above plants don＇ t reach the standard of the hyperaccumulator.

关 键 词：超富集植物 重金属污染 植物修复 都匀牛角塘 

分 类 号：X751[环境科学与工程—环境工程]