Soil erosion of unpaved loess roads subjected to an extreme rainstorm event: a case study of the Jiuyuangou watershed on the Loess Plateau, China
文献类型：期刊论文
| 作者 | Yang Bo; Wang Wen-long; Guo Ming-ming; Guo Wen-zhao; Wang Wen-xin; Kang Hong-liang; Zhao Man; Chen Zhuo-xin |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 16期号:6页码:1396-1407 |
| 关键词 | Road erosion 7 26 extreme rainstorms Loess Plateau Gully development |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-018-5211-z |
| 文献子类 | Article |
| 英文摘要 | Rainfall can cause serious soil loss in the Loess Plateau hilly and gully region, but little focus has been placed on the extreme rainstorm effects on unpaved loess road soil erosion. A field survey method was used to investigate the erosional effects of the 7.26 heavy rainfall event on unpaved loess roads in the Jiuyuangou watershed of the Loess Plateau, China. The results showed that the average and maximum widths of the eroded gullies that formed on the unpaved roads were 0.65-1.48 m and 1.00-3.60 m, respectively. The average and maximum depths of the eroded gullies were 0.42-1.13 m and 0.75-4.30 m, respectively. The average width-to-depth ratio was 1.31, indicating that the widening effect was greater than the downcutting effect in the eroded gullies. In addition, the gully density ranged from 0.07 to 0.29 m m(-2), and the road surface dissection degree ranged from 0.03 to 0.41 km(2) km(-2). Eroded gullies generally developed at the slope toe of the cut bank side. The average eroded gully width and depth at turns in the road were 1.47-2.64 times and 1.30-3.47 times greater, respectively, than those in other road sections. The road erosion modulus increased from the upper section to the lower section of the roads. The average road erosion modulus of the study catchment was 235,000 t km(-2). Turns in the road were associated with collapses, sinkholes and other gravitational erosion phenomena. The amount of road erosion under extreme rainfall conditions is mainly related to the interactions among road length, width, slope and soil bulk density. Our results provide a useful reference for developing further measures for preventing road erosion on the Loess Plateau. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000471607300013 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46517]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.6 |
| 推荐引用方式 GB/T 7714 | Yang Bo,Wang Wen-long,Guo Ming-ming,et al. Soil erosion of unpaved loess roads subjected to an extreme rainstorm event: a case study of the Jiuyuangou watershed on the Loess Plateau, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(6):1396-1407. |
| APA | Yang Bo.,Wang Wen-long.,Guo Ming-ming.,Guo Wen-zhao.,Wang Wen-xin.,...&Chen Zhuo-xin.(2019).Soil erosion of unpaved loess roads subjected to an extreme rainstorm event: a case study of the Jiuyuangou watershed on the Loess Plateau, China.JOURNAL OF MOUNTAIN SCIENCE,16(6),1396-1407. |
| MLA | Yang Bo,et al."Soil erosion of unpaved loess roads subjected to an extreme rainstorm event: a case study of the Jiuyuangou watershed on the Loess Plateau, China".JOURNAL OF MOUNTAIN SCIENCE 16.6(2019):1396-1407. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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