Soil effective clay content and sediment load reduce soil detachment rate by rill flow
文献类型：期刊论文
| 作者 | Zhou, Chunhong2; Shen, Nan1,2; Zhang, Fengbao1,2; He, Qilin1; Luo, Jiaru2; Huang, Wanyun2; Jiao, Feng1,2 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2025-04-01 |
| 卷号 | 650页码:14 |
| 关键词 | Sediment-laden rill flow Soil detachment process Soil property Sediment load Rill erosion |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2024.132512 |
| 通讯作者 | Shen, Nan(shennan@nwafu.edu.cn) |
| 英文摘要 | Soil detachment and sediment transport are the two primary rill erosion processes. The sediment load in rill flow undergoes continuous variation due to the continuity and feedback of soil detachment and sediment transport processes, potentially impacting the soil detachment rate in the next stage. However, numerous studies focus on the soil detachment process by clear rill flow, and the few existing studies on soil detachment process by sediment-laden rill flow fail to consider the effect of soil properties. Therefore, this study was conducted to analyze the effect of soil properties and sediment load on the soil detachment rate by sediment-laden rill flow (Dr), decipher the variation in Dr, and establish a model equation to predict Dr, where soil properties and sediment load were introduced. An indoor rill flume simulation experiment was conducted under combinations of five soil types, five slopes, five flow discharges, and five sediment loads. The results revealed that the Dr of Shenmu sandy loess is the largest with a mean of 2.06 kg m- 2 s-1, followed by Dr of Ansai loess (1.57 kg m- 2 s-1), Yangling clay loess (1.37 kg m- 2 s-1), Dingbian sandy loess (1.19 kg m- 2 s-1), and Changwu loess (1.14 kg m- 2 s- 1). The effective clay content was the optimal soil property index correlation with Dr. Dr decreased with increasing sediment load and effective clay content. Variation partitioning revealed that the explanatory fraction of flow discharge was the highest (0.32), followed by the sediment load (0.21), slope (0.19), and effective clay content (0.14). There are interactions among the influencing factors in process of soil detachment. The sediment load level and effective clay content could inhibit the influence of flow discharge on the Dr. The higher the slope, flow discharge, and sediment load level, the greater the influence of the effective clay content on the Dr. Dr by sediment-laden rill flow can be modeled using a quaternary power function of the slope gradient, flow discharge, sediment load, and effective clay content (R2 = 0.863). Introducing the sediment load and effective clay content as factors in the model equation of Dr can improve the simulation precision. These findings aid in advancing the development of a physical process-based rill erosion model. |
| WOS关键词 | DIFFERENT LAND USES ; LOESS PLATEAU ; OVERLAND-FLOW ; HYDRAULIC PARAMETERS ; AGGREGATE STABILITY ; TEMPORAL VARIATION ; EROSION PROCESSES ; WATER EROSION ; STEEP SLOPES ; SHEET FLOW |
| 资助项目 | National Natural Science Foundation of China[U22A20613] ; National Natural Science Foundation of China[42477369] ; China Postdoctoral Science Foundation[2021M702681] ; Natural Science Basic Research Pro-gram of Shaanxi Province[2024C-YBON-0296] ; Fundamental Research Funds for the Central Universities[2023HHZX001] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001389490300001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Natural Science Basic Research Pro-gram of Shaanxi Province ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/212467]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Shen, Nan |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Coll Soil & Water Conservat Sci & Engn, State Key Lab Soil Eros & Dryland Farming Loess Pl, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Chunhong,Shen, Nan,Zhang, Fengbao,et al. Soil effective clay content and sediment load reduce soil detachment rate by rill flow[J]. JOURNAL OF HYDROLOGY,2025,650:14. |
| APA | Zhou, Chunhong.,Shen, Nan.,Zhang, Fengbao.,He, Qilin.,Luo, Jiaru.,...&Jiao, Feng.(2025).Soil effective clay content and sediment load reduce soil detachment rate by rill flow.JOURNAL OF HYDROLOGY,650,14. |
| MLA | Zhou, Chunhong,et al."Soil effective clay content and sediment load reduce soil detachment rate by rill flow".JOURNAL OF HYDROLOGY 650(2025):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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