Modeling Solute Transport by DLA in Soils of Northeastern Egypt (SCI)
文献类型：期刊论文
| 作者 | Hamed Y. A.; Yasuda H.; Persson M.; Berndtsson R.; Wang X. P. |
| 刊名 | Plos One
 |
| 出版日期 | 2015 |
| 卷号 | 10期号:3页码:15 |
| 英文摘要 | Arid soils in Egypt display large variability in solute transport properties, causing problems in soil management. To characterize this variability, dye infiltration experiments were conducted on four plots representing three main soil types in northeastern Egypt. The plots represented both cultivated and uncultivated land use. The observed dye patterns displayed a large variability and especially the clay soils indicated a high degree of preferential flow. The loamy sand and sandy soils displayed a more uniform dye distribution indicating more homogeneous soil properties. The observed dye patterns were modeled using a diffusion limited aggregation (DLA) model. The DLA is a random walk model where model parameters can be optimized using genetic algorithms (GA). The DLA model reproduced the observed dye patterns for all soils in an excellent way. The best fit was obtained with a specific combination of directional random walk probabilities P-u, P-d, P-r, and P-l for each plot (correlation 0.97-0.99). To account for soil layers with different hydraulic properties a two layer DLA model was developed. For all plots the Pu (upward random walk probability) was higher for the upper more homogeneous soil layer. The overall results showed that spatial variability resulting from solute transport for the investigated soils can be modeled using a DLA approach. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27243]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Hamed Y. A.,Yasuda H.,Persson M.,et al. Modeling Solute Transport by DLA in Soils of Northeastern Egypt (SCI)[J]. Plos One,2015,10(3):15. |
| APA | Hamed Y. A.,Yasuda H.,Persson M.,Berndtsson R.,&Wang X. P..(2015).Modeling Solute Transport by DLA in Soils of Northeastern Egypt (SCI).Plos One,10(3),15. |
| MLA | Hamed Y. A.,et al."Modeling Solute Transport by DLA in Soils of Northeastern Egypt (SCI)".Plos One 10.3(2015):15. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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