城市地质2016，Vol.11Issue(4)：7-14,8.DOI:10.3969/j.issn.1007-1903.2016.04.002
北京采矿废弃地植物修复重金属去除率研究
Research of Heavy Metal Removal Rate by Phytoremediation of Deserted Mine in Beijing
摘要
Abstract
Planting experiment was conducted combined with the geological environment of mining area in Beijing to study phytoremediation of four planting models (Festuca arundinacea, Medicago sativa, Trifolium repens L. and mixed planting with Radix isatidis, radix platycodi, cosmos et al.) .The study areas are Xituogu gold mine in Miyun, Fengjiayu iron mine in Miyun, and Sangyu coal gangue in Mentougou. The samples were collected and analyzed in four times of the plants’ life cycle. The results showed that Festuca arundinacea had the best removal efficiency of Pb, Zn, Cr, and Cd of gold mine soil. The maximum removal rates were up to 18.10%, 14.57%, 13.81%, 18.12%, respectively. For the deserted iron mine soil, the mixture planting had the best removal efifciency of Cr, Ni, As, Hg, with the removal rates of 14.81%, 9.80%, 37.25%, 50% , respectively. For the gangue, the Trifolium repens L. had the best removal efifciency of Cr, Pb, Zn, Cd, with the removal rates of 5.65%, 37.15%, 15.15%, 20%. In the whole life cycle of the 4 planting models, the removal rates of the heavy metals don’t always continue to rise, but frequently appear the phenomena of rise ifrst and fall later. This might provide a scientiifc basis for the regular reap, and therefore improve the removal efifciency of heavy metals by phytoremediation.关键词
采矿废弃地/植物修复/去除率/修复模式/生命周期Key words
Mining deserted land/Phytoremediation/Removal rate/Repair model/Life cycle分类
资源环境引用本文复制引用
孙楠,闫广新,王立发,张言,邢宇鑫,王金艳..北京采矿废弃地植物修复重金属去除率研究[J].城市地质,2016,11(4):7-14,8.基金项目
北京市矿山地质环境监测系统建设（一期） （）
