CAJ | 학술논문

对定南县岿美山钨矿尾砂库区天然生长植物及其富集重金属Cd的特性进行了研究,结果表明岿美山钨矿尾砂库区共出现37种天然生长植物,隶属21科37属,其中大部分为草本植物,主要为菊科与禾本科.在这些植物中没有发现镉的超富集植物,但有15种植物富集Cd的含量大于10 mg/kg,其中藿香蓟地上部分Cd的含量最高,达到67.70 mg/kg,其富集系数与转移系数大于1,分别为2.35与2.66,接近Cd的超富集植物标准;小飞蓬、田麻、野茼蒿、藿香蓟、鬼针草等5种植物地上部分Cd含量大于地下部分,其转移系数与富集系数也均大于1,是修复Cd污染的优良植物,具有作为矿区土壤Cd污染修复物种的巨大潜力.
대정남현규미산오광미사고구천연생장식물급기부집중금속Cd적특성진행료연구,결과표명규미산오광미사고구공출현37충천연생장식물,대속21과37속,기중대부분위초본식물,주요위국과여화본과.재저사식물중몰유발현력적초부집식물,단유15충식물부집Cd적함량대우10 mg/kg,기중곽향계지상부분Cd적함량최고,체도67.70 mg/kg,기부집계수여전이계수대우1,분별위2.35여2.66,접근Cd적초부집식물표준;소비봉、전마、야동호、곽향계、귀침초등5충식물지상부분Cd함량대우지하부분,기전이계수여부집계수야균대우1,시수복Cd오염적우량식물,구유작위광구토양Cd오염수복물충적거대잠력.
Natural plants samples in Kuimei tungsten mine and their enrichment characteristics of Cd were studied. The results showed that 37 kinds of plants in kuimei tungsten mine belong to 37 genera of 21 families, mostly are herbage plants, mainly including Compositae and Gramineae and so on. Hyper-accumulator of Cd were not found in these plants, but the values of Cd in 15 kinds of plants are more than 10 mg/kg, that in above-ground part of the Ageratum conyzoides L. is the highest, up to 67.70 mg/kg, the enrichment coffficient and transfer coefficient respectively are 2.35 and 2.66, approaching the standerd of hyper-accumulator. The Cd contents in above-ground parts of Conyza canadensis L., Corchoropsis tomentosa (Thunb.) Mak., Gynura crepidioides Benth., Ageratum conyzoides L., Bidens pilosa Linn, are more than that in under-ground, both their enrichment coffficient and transfer coefficient are beyond 1. These plants could be used as potential plants of Cd to repair contaminated soil .