Predicting the interrill erosion rate on hillslopes incorporating soil aggregate stability on the Loess Plateau of China
文献类型：期刊论文
| 作者 | Liu, Ya1; Liu, Gang1,2,7; Xiao, Hai1,3,4; Dan, Chenxi1; Shu, Chengbo1; Han, Yuqian1; Zhang, Qiong1; Guo, Zhen5; Zhang, Yang6 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2023-07-01 |
| 卷号 | 622页码:10 |
| ISSN号 | 0022-1694 |
| 关键词 | Interrill erosion Aggregate stability Hydraulic parameters WEPP model REEs |
| DOI | 10.1016/j.jhydrol.2023.129698 |
| 通讯作者 | Liu, Gang(gliu@foxmail.com) |
| 英文摘要 | The Water Erosion Prediction Project (WEPP) model is a physical process-based model that can predict both interrill and rill erosion on hillslopes. The interrill erodibility (Ki) is quantified by the soil particle size distribution, which is a key parameter in WEPP model. However, the important effects of soil structure on soil erodibility are ignored, which seriously affects the prediction accuracy of the model. In this study, simulated rainfall experiments (60, 90, 120 mm h-1) were performed to improve the prediction equation of interrill erosion incorporating the aggregate instability index (As). Rare earth elements (REEs) were employed as tracers to distinguish interrill and rill erosion on slopes in a box (2 m long, 0.5 m wide, 0.4 m deep) with gradients of 10 degrees, 20 degrees and 30 degrees. The Le Bissonnais method was used to determine the soil aggregate stability. The results showed that aggregate stability played a crucial role in interrill erosion under similar runoff rates. The improved equation contains four parameters, As, runoff rate (q), rainfall intensity (I) and slope gradient (Sf), with a coefficient of determination (R2) of 0.81 and model efficiency (ME) of 0.79. This equation exhibits greatly improved efficiency in estimating the interrill erosion rate compared to the WEPP model. Furthermore, a new equation incorporating the As, flow velocity (v), flow depth (h) and hydraulic gradient (J) was developed, with R2 of 0.90 and ME of 0.89. This study provides a deeper understanding of the mechanism of interrill erosion and improves upon the physical process-based soil erosion model. |
| WOS关键词 | MECHANICAL BREAKDOWN ; RAINDROP-IMPACT ; SHEET EROSION ; ERODIBILITY ; ULTISOLS ; MODEL ; DETACHMENT ; MONITOR ; SLOPES ; REGION |
| 资助项目 | National Natural Science Foundation of China[U22A20613] ; National Natural Science Foundation of China[42277344] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001011050000001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/195068]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Gang |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 3.Minist Educ, Key Lab Geol Hazards Three Gorges Reservoir Area, Yichang 443002, Peoples R China 4.China Three Gorges Univ, Coll Civil Engn & Architecture, Yichang 443002, Peoples R China 5.Sichuan Huabiaoce Testing Technol Co Ltd, Chengdu 610097, Sichuan, Peoples R China 6.Shaanxi Prov Land Engn Construct Grp Co Ltd, Xian 710075, Peoples R China 7.Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Ya,Liu, Gang,Xiao, Hai,et al. Predicting the interrill erosion rate on hillslopes incorporating soil aggregate stability on the Loess Plateau of China[J]. JOURNAL OF HYDROLOGY,2023,622:10. |
| APA | Liu, Ya.,Liu, Gang.,Xiao, Hai.,Dan, Chenxi.,Shu, Chengbo.,...&Zhang, Yang.(2023).Predicting the interrill erosion rate on hillslopes incorporating soil aggregate stability on the Loess Plateau of China.JOURNAL OF HYDROLOGY,622,10. |
| MLA | Liu, Ya,et al."Predicting the interrill erosion rate on hillslopes incorporating soil aggregate stability on the Loess Plateau of China".JOURNAL OF HYDROLOGY 622(2023):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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