Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar
文献类型：期刊论文
| 作者 | Hu, Pengjie1; Ouyang, Younan2; Wu, Longhua1; Shen, Libo1; Luo, Yongming3 ; Christie, Peter1
|
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2015 |
| 卷号 | 27页码:225-231 |
| ISSN号 | 1001-0742 |
| 关键词 | Arsenic Cadmium Dimethylarsinic acid (DMA) Rice Speciation Water management |
| 通讯作者 | Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. pjhu@issas.ac.cn ; lhwu@issas.ac.cn |
| 产权排序 | [Hu, Pengjie; Wu, Longhua; Shen, Libo; Christie, Peter] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Ouyang, Younan] Chinese Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 中文摘要 | Pot and field experiments were conducted to investigate the effects of water regimes on the speciation and accumulation of arsenic (As) and cadmium (Cd) in Brazilian upland rice growing in soils polluted with both As and Cd. In the pot experiment constant and intermittent flooding treatments gave 3-16 times higher As concentrations in soil solution than did aerobic conditions but Cd showed the opposite trend. Compared to arsenate, there were more marked changes in the arsenite concentrations in the soil solution as water management shifted, and therefore arsenite concentrations dominated the As speciation and bioavailability in the soil. In the field experiment As concentrations in the rice grains increased from 0.14 to 0.21 mg/kg while Cd concentrations decreased from 0.21 to 0.02 mg/kg with increasing irrigation ranging from aerobic to constantly flooding conditions. Among the various water regimes the conventional irrigation treatment produced the highest rice grain yield of 6.29 tons/ha. The As speciation analysis reveals that the accumulation of dimethylarsinic acid (from 11.3% to 61.7%) made a greater contribution to the increase in total As in brown rice in the intermittent and constant flooding treatments compared to the intermittent-aerobic treatment. Thus, water management exerted opposite effects on Cd and As speciation and bioavailability in the soil and consequently on their accumulation in the upland rice. Special care is required when irrigation regime methods are employed to mitigate the accumulation of metal(loid)s in the grain of rice grown in soils polluted with both As and Cd. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 英文摘要 | Pot and field experiments were conducted to investigate the effects of water regimes on the speciation and accumulation of arsenic (As) and cadmium (Cd) in Brazilian upland rice growing in soils polluted with both As and Cd. In the pot experiment constant and intermittent flooding treatments gave 3-16 times higher As concentrations in soil solution than did aerobic conditions but Cd showed the opposite trend. Compared to arsenate, there were more marked changes in the arsenite concentrations in the soil solution as water management shifted, and therefore arsenite concentrations dominated the As speciation and bioavailability in the soil. In the field experiment As concentrations in the rice grains increased from 0.14 to 0.21 mg/kg while Cd concentrations decreased from 0.21 to 0.02 mg/kg with increasing irrigation ranging from aerobic to constantly flooding conditions. Among the various water regimes the conventional irrigation treatment produced the highest rice grain yield of 6.29 tons/ha. The As speciation analysis reveals that the accumulation of dimethylarsinic acid (from 11.3% to 61.7%) made a greater contribution to the increase in total As in brown rice in the intermittent and constant flooding treatments compared to the intermittent-aerobic treatment. Thus, water management exerted opposite effects on Cd and As speciation and bioavailability in the soil and consequently on their accumulation in the upland rice. Special care is required when irrigation regime methods are employed to mitigate the accumulation of metal(loid)s in the grain of rice grown in soils polluted with both As and Cd. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 学科主题 | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | ORYZA-SATIVA L. ; SOIL ; CHINA ; PRODUCTIVITY ; EXPOSURE ; FIELDS ; PLANTS ; HUNAN ; LEAD ; IRON |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000348825400026 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/8675]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Pengjie,Ouyang, Younan,Wu, Longhua,et al. Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2015,27:225-231. |
| APA | Hu, Pengjie,Ouyang, Younan,Wu, Longhua,Shen, Libo,Luo, Yongming,&Christie, Peter.(2015).Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,27,225-231. |
| MLA | Hu, Pengjie,et al."Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 27(2015):225-231. |
入库方式： OAI收割
来源：烟台海岸带研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。