Soil erosion and sediment interception by check dams in a watershed for an extreme rainstorm on the Loess Plateau, China
文献类型：期刊论文
| 作者 | Bai, Leichao2; Wang, Nan1,3; Jiao, Juying1,2; Chen, Yixian1,3; Tang, Bingzhe2; Wang, Haolin2; Chen, Yulan1,3; Yan, Xiqin1,3; Wang, Zhijie4 |
| 刊名 | INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 35期号:4页码:408-416 |
| ISSN号 | 1001-6279 |
| 关键词 | Extreme rainstorm Soil erosion Check dam Sediment interception Loess Plateau |
| DOI | 10.1016/j.ijsrc.2020.03.005 |
| 通讯作者 | Jiao, Juying(jyjiao@ms.iswc.ac.cn) |
| 英文摘要 | The magnitude of soil erosion and sediment load reduction efficiency of check dams under extreme rainstorms is a long-standing concern. The current paper aims to use check dams to deduce the amount of soil erosion under extreme rainstorms in a watershed and to identify the difference in sediment interception efficiency of different types of check dams. Based on the sediment deposition at 12 check dams with 100% sediment interception efficiency and sub-catchment clustering by taking 12 dam-controlled catchments as clustering criteria, the amount of soil erosion resulting from an extreme rainstorm event on July 26, 2017 (named "7.26" extreme rainstorm) was estimated in the Chabagou watershed in the hill and gully region of the Loess Plateau. The differences in the sediment interception efficiency among the check dams in the watershed were analyzed according to field observations at 17 check dams. The results show that the average erosion intensity under the "7-26" extreme rainstorm was approximately 2.03 x 10(4) t/km(2), which was 5 times that in the second largest erosive rainfall in 2017 (4.15 x 10(3) t/km(2)) and 11-384 times that for storms in 2018 (0.53 x 10(2) t/km(2) - 1.81 x 10(3) t/km(2)). Under the "7-26" extreme rainstorm, the amount of soil erosion in the Chabagou watershed above the Caoping hydrological station was 4.20 x 10(6) t. The sediment interception efficiency of the check dams with drainage canals (including the destroyed check dams) and with drainage culverts was 6.48 and 39.49%, respectively. The total actual sediment amount trapped by the check dams was 1.11 x 10(6) t, accounting for 26.36% of the total amount of soil erosion. In contrast, 3.09 x 10(6) t of sediment were input to the downstream channel, and the sediment deposition in the channel was 2.23 x 10(6) t, accounting for 53.15% of the total amount of soil erosion. The amount of sediment transport at the hydrological station was 8.60 x 10(5) t. The Sediment Delivery Ratio (SDR) under the "7.26" extreme rainstorm was 0.21. The results indicated that the amount of soil erosion was huge, and the sediment interception efficiency of the check dams was greatly reduced under extreme rainstorms. It is necessary to strengthen the management and construction technology standards of check dams to improve the sediment interception efficiency and flood safety in the watershed. (C) 2020 International Research and Training Centre on Erosion and Sedimentation/the World Association for Sedimentation and Erosion Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | LAND-USE ; CATCHMENT ; RUNOFF ; RAINFALL ; PRECIPITATION ; PATTERNS ; NITROGEN ; CARBON ; BUDGET ; RATES |
| 资助项目 | National Key Research and Development Program of China[2016YFC0501604] ; National Natural Science Foundation of China[41771319] ; Special-Funds of Scientific Research Programs of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-1704] |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| 出版者 | IRTCES |
| WOS记录号 | WOS:000531086000009 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Special-Funds of Scientific Research Programs of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/159790]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Jiao, Juying |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest Agr & Forestry Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Guizhou Univ, Coll Life Sci, Guiyang 550025, Guizhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Leichao,Wang, Nan,Jiao, Juying,et al. Soil erosion and sediment interception by check dams in a watershed for an extreme rainstorm on the Loess Plateau, China[J]. INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,2020,35(4):408-416. |
| APA | Bai, Leichao.,Wang, Nan.,Jiao, Juying.,Chen, Yixian.,Tang, Bingzhe.,...&Wang, Zhijie.(2020).Soil erosion and sediment interception by check dams in a watershed for an extreme rainstorm on the Loess Plateau, China.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,35(4),408-416. |
| MLA | Bai, Leichao,et al."Soil erosion and sediment interception by check dams in a watershed for an extreme rainstorm on the Loess Plateau, China".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 35.4(2020):408-416. |
入库方式： OAI收割
来源：地理科学与资源研究所
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