An analytical solution for advance of solute front in soils
文献类型：SCI/SSCI论文
| 作者 | Liu C. P. ; Shao M. A. ; Lu D. Q. ; Xia W. S. ; Cai S. B. |
| 发表日期 | 2004 |
| 关键词 | analytical solution parameter estimation solute front solute transport parameter-estimation approximate solution transport models flow |
| 英文摘要 | Based on the assumption that solute transport in a semi-infinite soil column or in a field soil profile can be described by the boundary-layer method, an analytical solution is presented for the advance of a solute front with time. The traditional convection-dispersion equation (CDE) subjected to two boundary conditions: 1) at the soil surface (or inlet boundary) and 2) at the solute front, was solved using a Laplace transformation. A comparison of resident concentrations using a boundary-layer method and an exact solution (in a semi-infinite-domain) showed that both were in good agreement within the range between the two boundaries. This led to a new method for estimating solute transport parameters in soils, requiring only observation of advance of the solute front with time. This may be corroborated visually using a tracer solution with marking-dye or measured utilizing time domain reflectometry (TDR). This method is applicable to both laboratory soil columns and field soils. Thus, it could be a step forward for modeling solute transport in field soils and for better understanding of the transport processes in soils. |
| 出处 | Pedosphere |
| 卷 | 14 |
| 期 | 3 |
| 页 | 339-346 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1002-0160 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23495]  |
| 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 | Liu C. P.,Shao M. A.,Lu D. Q.,et al. An analytical solution for advance of solute front in soils. 2004. |
入库方式： OAI收割
来源：地理科学与资源研究所
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