中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Red mud (RM)-Induced enhancement of iron plaque formation reduces arsenic and metal accumulation in two wetland plant species

文献类型:SCI/SSCI论文

作者Yang J. X.; Guo, Q. J.; Yang, J.; Zhou, X. Y.; Ren, H. Y.; Zhang, H. Z.; Xu, R. X.; Wang, X. D.; Peters, M.; Zhu, G. X.
发表日期2016
关键词arsenic heavy metals iron plaque red mud wetland plant radial oxygen loss oryza-sativa l. cadmium accumulation contaminated soil root porosity heavy-metals zinc uptake rice tolerance pb
英文摘要Human activities have resulted in arsenic (As) and heavy metals accumulation in paddy soils in China. Phytoremediation has been suggested as an effective and low-cost method to clean up contaminated soils. A combined soil-sand pot experiment was conducted to investigate the influence of red mud (RM) supply on iron plaque formation and As and heavy metal accumulation in two wetland plant species (Cyperus alternifolius Rottb., Echinodorus amazonicus Rataj), using As and heavy metals polluted paddy soil combined with three rates of RM application (0, 2%, 5%). The results showed that RM supply significantly decreased As and heavy metals accumulation in shoots of the two plants due to the decrease of As and heavy metal availability and the enhancement of the formation of iron plaque on the root surface and in the rhizosphere. Both wetland plants supplied with RM tended to have more Fe plaque, higher As and heavy metals on roots and in their rhizospheres, and were more tolerant of As and heavy metal toxicity. The results suggest that RM-induced enhancement of the formation of iron plaque on the root surface and in the rhizosphere of wetland plants may be significant for remediation of soils contaminated with As and heavy metals.
出处International Journal of Phytoremediation
18
3
269-277
收录类别SCI
语种英语
ISSN号1522-6514
源URL[http://ir.igsnrr.ac.cn/handle/311030/43335]  
专题地理科学与资源研究所_历年回溯文献
推荐引用方式
GB/T 7714
Yang J. X.,Guo, Q. J.,Yang, J.,et al. Red mud (RM)-Induced enhancement of iron plaque formation reduces arsenic and metal accumulation in two wetland plant species. 2016.

入库方式: OAI收割

来源:地理科学与资源研究所

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