酸性土壤中铜和镉的原位植物提取及其生物学影响
In situ phytoextraction of copper and cadmium and its biological impacts in acidic soil.
作者信息
Cui Hongbiao, Fan Yuchao, Yang John, Xu Lei, Zhou Jing, Zhu Zhenqiu
机构信息
School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, China; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy Sciences, Nanjing, 210008, China.
School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, China.
出版信息
Chemosphere. 2016 Oct;161:233-241. doi: 10.1016/j.chemosphere.2016.07.022. Epub 2016 Jul 17.
Phytoremediation is a potential cost-effective technology for remediating heavy metal-contaminated soils. In this study, we evaluated the biomass and accumulation of copper (Cu) and cadmium (Cd) of plant species grown in a contaminated acidic soil treated with limestone. Five species produced biomass in the order: Pennisetum sinese > Elsholtzia splendens > Vetiveria zizanioides > Setaria pumila > Sedum plumbizincicola. Over one growing season, the best accumulators for Cu and Cd were Pennisetum sinese and Sedum plumbizincicola, respectively. Overall, Pennisetum sinese was the best species for Cu and Cd removal when biomass was considered. However, Elsholtzia splendens soil had the highest enzyme activities and microbial populations, while the biological properties in Pennisetum sinese soil were moderately enhanced. Results would provide valuable insights for phytoremediation of metal-contaminated soils.
植物修复是一种用于修复重金属污染土壤的具有潜在成本效益的技术。在本研究中，我们评估了在经石灰石处理的污染酸性土壤中生长的植物物种的生物量以及铜（Cu）和镉（Cd）的积累情况。五个物种产生生物量的顺序为：狼尾草＞海州香薷＞香根草＞粟＞东南景天。在一个生长季中，Cu和Cd的最佳积累植物分别是狼尾草和东南景天。总体而言，考虑生物量时，狼尾草是去除Cu和Cd的最佳物种。然而，海州香薷土壤具有最高的酶活性和微生物数量，而狼尾草土壤的生物学特性得到适度增强。研究结果将为金属污染土壤的植物修复提供有价值的见解。
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