Rainfall and inflow effects on soil erosion for hillslopes dominated by sheet erosion or rill erosion in the Chinese Mollisol region
文献类型：期刊论文
| 作者 | Shen Hai-ou; Wen Lei-lei; He Yun-feng; Hu Wei; Li Hong-li; Che Xiao-cui; Li Xin |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 15期号:10页码:2182-2191 |
| 关键词 | Runoff Soil loss Slope gradient Rill erosion Mollisol region |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-018-5056-5 |
| 文献子类 | Article |
| 英文摘要 | Erosion agents and patterns profoundly affect hillslope soil loss characteristics. However, few attempts have been made to analyze the effects of rainfall and inflow on soil erosion for hillslopes dominated by sheet erosion or rill erosion in the Chinese Mollisol region. The objective of this study was to discuss the erosive agent (rainfall or inflow), hillslope erosion pattern (sheet erosion or rill erosion) and slope gradient effects on runoff and soil losses. Two soil pans (2.0 m long, 0.5 m wide and 0.5 m deep) with 5 degrees and 10 degrees slopes were subjected to rainfall (0 and 70 mm h(-1)) and inflow (0 and 70 mm h(-1)) experiments. Three experimental combinations of rainfall intensity (RI) and inflow rate (IR) were tested using the same water supply of 70 mm by controlling the run time. A flat soil surface and a soil bed with a straight initial rill were prepared manually, and represented hillslopes dominated by sheet erosion and rill erosion, respectively. The results showed that soil losses had greater differences among treatments than total runoff. Soil losses decreased in the order of RI70+IR70 > RI70+IR0 > RI0+IR70. Additionally, soil losses for hillslopes dominated by rill erosion were 1.7-2.2 times greater at 5 degrees and 2.5-6.9 times greater at 10 degrees than those for hillslopes dominated by sheet erosion. The loss of <0.25 mm soil particles and aggregates varying from 47.72%-99.60% of the total soil loss played a dominant role in the sediment. Compared with sheet erosion hillslopes, rill erosion hillslopes selectively transported more microaggregates under a relatively stable rill development stage, but rills transported increasingly more macroaggregates under an active rill development stage. In conclusion, eliminating raindrop impact on relatively gentle hillslopes and preventing rill development on relatively steep hillslopes would be useful measures to decrease soil erosion and soil degradation in the Mollisol region of northeastern China. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000447295900008 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46325]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.10 |
| 推荐引用方式 GB/T 7714 | Shen Hai-ou,Wen Lei-lei,He Yun-feng,et al. Rainfall and inflow effects on soil erosion for hillslopes dominated by sheet erosion or rill erosion in the Chinese Mollisol region[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(10):2182-2191. |
| APA | Shen Hai-ou.,Wen Lei-lei.,He Yun-feng.,Hu Wei.,Li Hong-li.,...&Li Xin.(2018).Rainfall and inflow effects on soil erosion for hillslopes dominated by sheet erosion or rill erosion in the Chinese Mollisol region.JOURNAL OF MOUNTAIN SCIENCE,15(10),2182-2191. |
| MLA | Shen Hai-ou,et al."Rainfall and inflow effects on soil erosion for hillslopes dominated by sheet erosion or rill erosion in the Chinese Mollisol region".JOURNAL OF MOUNTAIN SCIENCE 15.10(2018):2182-2191. |
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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