农业环境科学学报2017，Vol.36Issue(12)：2500-2505,6.DOI:10.11654/jaes.2017-0790
几种草本植物对面源微污染重金属的净化能力
Ability of herbaceous plants to remove heavy metals from non-point sources of pollution in riparian buffer zones
摘要
Abstract
To study the ability of herbaceous plants to remove heavy metal micropollutants in the northeastern region of China, Medicago sativa, Poapretensis, and Lolium perenne were selected. The ability of these three species to remove Cu, Cd, and Pb was studied using hy-droponic experiments. The results showed that each of these three herbs displayed the ability to remove Cu, Cd and Pb. The removal rate of Cu and Pb increased with increasing exposure levels, while the removal rate of Cd decreased with increasing exposure levels for all three herbs. The removal efficiencies of Cu, Cd and Pb from synthetic rainwater were different for different stages of growth. Lolium perenne had a highest removal rates at the growth stage, with a removal efficiency of Cu, Cd and Pb up to 56.85％, 63.72％, and 55.03％, respectively. Medicago sativa had the highest removal rate at the seedling stage, with a removal efficiency of Cu, Cd and Pb up to 41.98％, 45.37％, and 68.41％, respectively. Poapretensis also had the highest removal rate in the growth stage, with a removal efficiency of Cu, Cd and Pb up to 51.25％, 33.83％, and 26.55％, respectively. These results demonstrate that these three species may be used as alternative herbaceous plants for riparian buffer zones.关键词
草本植物/重金属/微污染/净化能力/滨岸缓冲带Key words
herbs/heavy metals/micropollutants/purification ability/riparian buffer zone分类
资源环境引用本文复制引用
陈冬霞,刘宏伟,梁红,沈海龙,高大文..几种草本植物对面源微污染重金属的净化能力[J].农业环境科学学报,2017,36(12):2500-2505,6.基金项目
科技部"十三五"科技支撑计划项目(2015BAD07B06) The Ministry of Science and Technology Support Project"13th Five-Year"(2015BAD07B06) （2015BAD07B06）
