Effect of combined rainfall and inflow on soil erosion of spoil tips
文献类型：期刊论文
| 作者 | Lou, Yongcai1; Wu, Tong2; Sun, Guanfang1; Cen, Yunfeng1; Su, Bingni1; Gao, Zhaoliang1,2 |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2022-05-06 |
| 页码 | 17 |
| ISSN号 | 1439-0108 |
| 关键词 | Rainfall Inflow Spoil tips Soil erosion Dimensionless prediction model |
| DOI | 10.1007/s11368-022-03205-z |
| 通讯作者 | Gao, Zhaoliang(gzl@ms.iswc.ac.cn) |
| 英文摘要 | Purpose Spoil tips are an important source of newly increased water and soil loss in production and construction project areas. However, limited information focuses on the combination of rainfall and inflow effects on soil erosion of spoil tips. Therefore, this study aimed to quantify the effects of rainfall intensity, inflow rate and the interaction of rainfall and inflow on the slope erosion of spoil tips. Materials and methods The runoff plot dimensions were 5 mx 1 mx 0.5 m (length x width x depth), and the slopes were set as 32 degrees and 36 degrees. A series of field experiments was conducted to study the effect of rainfall intensity (1.5, 2.0 and 2.5 mm min(-1)), inflow rate (8, 10 and 12 L min(-1)) and the interaction between rainfall and inflow on the soil erosion of spoil tips. Results and discussion The results showed that rainfall intensity and inflow rate contributed 22.94-49.87% and 9.24-27.90%, 30.96-50.38% and 13.97-69.73%, respectively, to the runoff and soil loss. The interaction between rainfall and inflow contributed 6.18-38.65% to runoff and 20.72-70.83% to soil loss. The unit stream power, runoff shear stress and stream power can be considered the best hydrodynamic parameter to characterise the dynamic mechanisms of soil erosion under rainfall alone, inflow alone and rainfall + inflow, respectively. The corresponding critical values were 0.013 m s(-1), 4.230 N m(-2) and 0.774 N m(-1) s(-1). A dimensionless model for predicting slope soil erosion of spoil tips under the combination of rainfall and inflow was established based on the comprehensive consideration of rainfall, inflow, topography and runoff factors, which showed satisfactory prediction results (R-2 = 0.887, N-SE = 0.758). Conclusions Inflow rate was the key element affecting the soil erosion of spoil tips. Therefore, in the management of soil erosion in spoil tips, the focus should be on how to effectively regulate runoff from the platform and slope. |
| WOS关键词 | ROCK FRAGMENT CONTENT ; OVERLAND-FLOW ; RILL EROSION ; FLUME EXPERIMENTS ; RESERVOIR AREA ; SLOPE GRADIENT ; RUNOFF ; SEDIMENT ; DETACHMENT ; IMPACT |
| 资助项目 | National Natural Science Foundation of China[41671283] ; National Natural Science Foundation of China[2016YFC0501706-02] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000791625800001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/176007]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Zhaoliang |
| 作者单位 | 1.Northwest A&F Univ, Inst Water & Soil Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lou, Yongcai,Wu, Tong,Sun, Guanfang,et al. Effect of combined rainfall and inflow on soil erosion of spoil tips[J]. JOURNAL OF SOILS AND SEDIMENTS,2022:17. |
| APA | Lou, Yongcai,Wu, Tong,Sun, Guanfang,Cen, Yunfeng,Su, Bingni,&Gao, Zhaoliang.(2022).Effect of combined rainfall and inflow on soil erosion of spoil tips.JOURNAL OF SOILS AND SEDIMENTS,17. |
| MLA | Lou, Yongcai,et al."Effect of combined rainfall and inflow on soil erosion of spoil tips".JOURNAL OF SOILS AND SEDIMENTS (2022):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
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