Flood Event Sediment Load Dynamics and Their Influencing Factors in the Dali River Basin on the Loess Plateau, China
文献类型：期刊论文
| 作者 | Han, Yong1,3; Yang, Qiannan1; Xu, Ximeng2; Li, Zhanbin1 |
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2026-02-06 |
| 卷号 | 40期号:2页码:e70434 |
| 关键词 | extreme precipitation flood event sediment load soil and water conservation measures the loess plateau |
| ISSN号 | 0885-6087 |
| DOI | 10.1002/hyp.70434 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Flood event sediment load plays a critical role in evaluating the effectiveness of soil and water conservation measures on the Loess Plateau and advancing understanding of water and sediment dynamics in the middle reaches of the Yellow River Basin. Thus, 524 flood events from 1960 to 2020 were analysed to identify the changes in flood event sediment load and their driving mechanisms in the Dali River Basin on the Loess Plateau, China. Results indicate that flood events consistently dominate sediment load, accounting for more than 90% of annual sediment load in most years. Two abrupt change points in the annual flood sediment load are identified in 1971 and 2002, accompanied by substantial declines in both annual maximum peak sediment concentration and flood sediment load across three periods. Runoff-sediment relationships become increasingly clustered with reduced slopes, indicating weakened sediment load sensitivity to runoff. Check dams, terraces, and vegetation exhibit significant negative relationships with flood sediment load, whereas five extreme precipitation indices are positively correlated (p < 0.05). These patterns suggest that although extreme precipitation remains a key hydrological driver of sediment mobilisation, its sediment-producing effect is increasingly constrained by soil and water conservation measures. Overall, coordinated implementation of check dams, terraces, and vegetation reduces sediment availability and connectivity within the basin, making sediment load during extreme flood events unlikely to exceed historical upper limits under current conservation conditions. The findings establish a scientific basis for sediment management and the optimization of soil and water conservation strategies. |
| URL标识 | 查看原文 |
| WOS关键词 | CHECK DAMS ; YELLOW-RIVER ; EROSION-CONTROL ; SOIL LOSS ; RUNOFF ; YIELD ; PRECIPITATION ; RAINFALL ; LAND ; REDUCTION |
| WOS研究方向 | Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001685936100001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/220995]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Xu, Ximeng |
| 作者单位 | 1.Xian Univ Technol, State Key Lab Water Engn Ecol & Environm Arid Area, Xian, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 3.Ankang Univ, Coll Chem & Environm, Ankang, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Han, Yong,Yang, Qiannan,Xu, Ximeng,et al. Flood Event Sediment Load Dynamics and Their Influencing Factors in the Dali River Basin on the Loess Plateau, China[J]. HYDROLOGICAL PROCESSES,2026,40(2):e70434. |
| APA | Han, Yong,Yang, Qiannan,Xu, Ximeng,&Li, Zhanbin.(2026).Flood Event Sediment Load Dynamics and Their Influencing Factors in the Dali River Basin on the Loess Plateau, China.HYDROLOGICAL PROCESSES,40(2),e70434. |
| MLA | Han, Yong,et al."Flood Event Sediment Load Dynamics and Their Influencing Factors in the Dali River Basin on the Loess Plateau, China".HYDROLOGICAL PROCESSES 40.2(2026):e70434. |
入库方式： OAI收割
来源：地理科学与资源研究所
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