Changes of solute transport characteristics in soil profile after mining at an opencast coal mine site on the Loess Plateau, China
文献类型：期刊论文
| 作者 | Zhen, Qing1,2,3,4; Zheng, Jiyong1,3,4; Zhang, Xingchang1,3,4; Shao, Ming'an2,3,5 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-05-15 |
| 卷号 | 665页码:142-152 |
| 关键词 | Nitrate Ammonium Solute transport Breakthrough curves Soil properties Mining area |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2019.02.035 |
| 通讯作者 | Zhang, Xingchang(zhangxc@ms.iswc.ac.cn) ; Shao, Ming'an(shaoma@igsnrr.ac.cn) |
| 英文摘要 | Dramatic changes in soil during opencast coalmine activities inevitably change soil water and solute movement. The objectives of this study were to assess the effects of mining on solute transport in different soil profiles and to find the relationships between solute transport parameters and soil physicochemical characteristics. After taking undisturbed soil columns from the different soil profiles of natural land (NLs) and reclaimed mine land (RLs), ammonium nitrate displacement studies were conducted, and the breakthrough curves (BTCs) of NO3- and NH4+ were obtained. Due to mining and reconstruction, soil texture became coarser, bulk density increased 2.77-15.15%, cation exchange capacity (CEC), soil organic matter (SOM), and total nitrogen (TN) content decreased 19.54-37.25%, 53.66-72.05%, and 42.58-58.55%, respectively. Additionally, the distributions of the physicochemical properties changed. The BTCs of NO3- for all soil columns can be well explained by both the convection-dispersion equation (CDE) and the two-region model (T-R). The transport parameters average pore water velocity (nu), dispersion coefficient (D), and dispersivity (lambda) were lower in RLs, which indicates that solutes became difficult to penetrate after mining. A significantly correlated relationship of bulk density and soil texture with the nu, D, and lambda parameters only occurred in the RLs samples. This result indicates that transport processes in NLs columns became more complicated and that soil texture and bulk density played an important role in the transport process of RLs columns. The two-sitemodel couldwell describe NH4+ transport for both NLs and RLs and provided a slightly better fit in RLs. This finding also gave evidence that RLs became homogeneous after mining and reconstruction. The parameter retardation factor (R) was significantly correlated to CEC, bulk density and soil texture in RLs. These results suggest that soil becomes homogeneous after mining and reconstruction and that high bulk density and fine soil texture could decrease the risk of leaching of solutes. (c) 2019 Published by Elsevier B.V. |
| WOS关键词 | CARBON SEQUESTRATION ; SPATIAL VARIABILITY ; WATER INFILTRATION ; PISHA SANDSTONE ; FLOW ; VEGETATION ; SORPTION ; COLUMNS ; FOREST ; DISPERSIVITY |
| 资助项目 | Open Research Fund of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-1706] ; National Key Research and Development Plan of China[2016YFC0501702] ; National Key Research and Development Plan of China[2015BAC01B01] ; National Natural Science Foundation of China[41571225] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000460628600017 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Open Research Fund of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau ; National Key Research and Development Plan of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/49205]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Xingchang; Shao, Ming'an |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhen, Qing,Zheng, Jiyong,Zhang, Xingchang,et al. Changes of solute transport characteristics in soil profile after mining at an opencast coal mine site on the Loess Plateau, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,665:142-152. |
| APA | Zhen, Qing,Zheng, Jiyong,Zhang, Xingchang,&Shao, Ming'an.(2019).Changes of solute transport characteristics in soil profile after mining at an opencast coal mine site on the Loess Plateau, China.SCIENCE OF THE TOTAL ENVIRONMENT,665,142-152. |
| MLA | Zhen, Qing,et al."Changes of solute transport characteristics in soil profile after mining at an opencast coal mine site on the Loess Plateau, China".SCIENCE OF THE TOTAL ENVIRONMENT 665(2019):142-152. |
入库方式： OAI收割
来源：地理科学与资源研究所
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