Sediment yield modeling for single storm events based on heavy-discharge stage characterized by stable sediment concentration
文献类型：SCI/SSCI论文
| 作者 | Zheng M. G. ; Cai Q. G. ; Cheng Q. J. |
| 发表日期 | 2007 |
| 关键词 | sediment yield peak flow flow-sediment relation Loess Plateau loess plateau spatial scale catchment erosion basin china water |
| 英文摘要 | The relation between runoff volume and sediment yield for individual events in a given watershed receives little attention compared to the relation between water discharge and sediment yield, though it may underlie the event-based sediment-yield model for large-size watershed. The data observed at 12 experimental subwatersheds in the Dalihe river watershed in hilly areas of Loess Plateau, North China, was selected to develop and validate the relation. The peak flow is often considered as an important factor affecting event sediment yield. However, in the study areas, sediment concentration remains relatively constant when water discharge exceeds a certain critical value, implying that the heavier flow is not accompanied with the higher sediment transport capacity. Hence, only the runoff volume factor was considered in the sediment-yield model. As both the total sediment and runoff discharge were largely produced during the heavy-discharge stage, and the sediment concentration was negligibly variable during this stage, a proportional function can be used to model the relation between event runoff volume and sediment yield for a given subwatershed. The applicability of this model at larger spatial scales was also discussed, and it was found that for the Yaoxinzhuang station at the Puhe River basin, which controls a drainage area of 2264km(2), a directly proportional relation between event runoff volume and sediment yield may also exist. |
| 出处 | International Journal of Sediment Research |
| 卷 | 22 |
| 期 | 3 |
| 页 | 208-217 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1001-6279 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22256]  |
| 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 | Zheng M. G.,Cai Q. G.,Cheng Q. J.. Sediment yield modeling for single storm events based on heavy-discharge stage characterized by stable sediment concentration. 2007. |
入库方式： OAI收割
来源：地理科学与资源研究所
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