Two-Dimensional Hillslope Scale Soil Erosion Model
文献类型：期刊论文
| 作者 | An Y(安翼) ; Liu QQ(刘青泉); Liu QQ
|
| 刊名 | Journal of Hydrologic Engineering
 |
| 出版日期 | 2009 |
| 卷号 | 14期号:7页码:690-697 |
| 通讯作者邮箱 | qqliu@imech.ac.cn |
| 关键词 | Sediment Transport Interrill Erosion Rill Erosion Rain Infiltration Detachment Power Flow |
| ISSN号 | 1084-0699 |
| 通讯作者 | Liu QQ |
| 中文摘要 | On a hillslope, overland flow first generates sheet erosion and then, with increasing flux, it causes rill erosion. Sheet erosion (interrill erosion) and rill erosion are commonly observed to coexist on hillslopes. Great differences exist between both the intensities and incidences of rill and interrill erosion. In this paper, a two-dimensional rill and interrill erosion model is developed to simulate the details of the soil erosion process on hillslopes. The hillslope is treated as a combination of a two-dimensional interrill area and a one-dimensional rill. The rill process, the interrill process, and the joint occurrence of rill and interrill areas are modeled, respectively. Thus, the process of sheet flow replenishing rill flow with water and sediment can be simulated in detail, which may possibly render more truthful results for rill erosion. The model was verified with two sets of data and the results seem good. Using this model, the characteristics of soil erosion on hillslopes are investigated. Study results indicate that (1) the proposed model is capable of describing the complex process of interrill and rill erosion on hillslopes; (2) the spatial distribution of erosion is simulated on a simplified two-dimensional hillslope, which shows that the distribution of interrill erosion may contribute to rill development; and (3) the quantity of soil eroded increases rapidly with the slope gradient, then declines, and a critical slope gradient exists, which is about 15-20 degrees for the accumulated erosion amount. |
| 类目[WOS] | Engineering, Civil ; Environmental Sciences ; Water Resources |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 关键词[WOS] | SEDIMENT TRANSPORT ; INTERRILL EROSION ; RILL EROSION ; RAIN ; INFILTRATION ; DETACHMENT ; POWER ; FLOW |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000267054700004 |
| 公开日期 | 2009-08-03 ; 2009-10-09 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/26662]  |
| 专题 | 力学研究所_环境力学重点实验室(2009-2011) |
| 通讯作者 | Liu QQ |
| 推荐引用方式 GB/T 7714 | An Y,Liu QQ,Liu QQ. Two-Dimensional Hillslope Scale Soil Erosion Model[J]. Journal of Hydrologic Engineering,2009,14(7):690-697. |
| APA | 安翼,刘青泉,&Liu QQ.(2009).Two-Dimensional Hillslope Scale Soil Erosion Model.Journal of Hydrologic Engineering,14(7),690-697. |
| MLA | 安翼,et al."Two-Dimensional Hillslope Scale Soil Erosion Model".Journal of Hydrologic Engineering 14.7(2009):690-697. |
入库方式： OAI收割
来源：力学研究所
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