The effect of reclamation on the distribution of heavy metals in saline-sodic soil of Songnen Plain, China
文献类型：期刊论文
| 作者 | L. X. Wang; B. X. Yan; L. L. Zhu; Y. Ou |
| 刊名 | Environmental Earth Sciences
 |
| 出版日期 | 2015 |
| 卷号 | 73期号:3页码:1083-1090 |
| 通讯作者 | 阎百兴 |
| 中文摘要 | The spatial distribution of total concentrations and the chemical speciation of heavy metals (Cu, Zn, Pb and Hg) in saline-sodic soil at different periods of time since reclamation (rain-fed arable land converted into paddy field) were investigated. The fluxes of different input sources of heavy metals were also analyzed. The results showed that long-term reclamation caused a decrease in soil pH and significant Hg accumulation in saline-sodic surface soil. Increasing Hg concentrations were identified at sites that had been reclaimed for longer periods, especially because the Songhua River was polluted by Hg between the 1960s and 1982; therefore, irrigation was assumed to be the predominant contributor of Hg accumulation in soil. Sequential leaching experiment revealed that a greater proportion of Hg occurred in the residual fraction, while the Cu, Zn and Pb were easily bound to oxidizable fraction in saline-sodic soil. Assessed by the spatial distribution of heavy metal concentrations in reclaimed soil, reclamation of saline-sodic soil in the Songnen Plain appeared to decrease the mobility of heavy metals, and did not pose the risk of accumulation in soil. |
| 源URL | [http://159.226.123.10/handle/131322/6461]  |
| 专题 | 东北地理与农业生态研究所_水环境污染与防治学科组 |
| 推荐引用方式 GB/T 7714 | L. X. Wang,B. X. Yan,L. L. Zhu,et al. The effect of reclamation on the distribution of heavy metals in saline-sodic soil of Songnen Plain, China[J]. Environmental Earth Sciences,2015,73(3):1083-1090. |
| APA | L. X. Wang,B. X. Yan,L. L. Zhu,&Y. Ou.(2015).The effect of reclamation on the distribution of heavy metals in saline-sodic soil of Songnen Plain, China.Environmental Earth Sciences,73(3),1083-1090. |
| MLA | L. X. Wang,et al."The effect of reclamation on the distribution of heavy metals in saline-sodic soil of Songnen Plain, China".Environmental Earth Sciences 73.3(2015):1083-1090. |
入库方式： OAI收割
来源：东北地理与农业生态研究所
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