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The effects of raindrop impact and runoff detachment on hillslope soil erosion and soil aggregate loss in the Mollisol region of Northeast China
文献类型：期刊论文
| 作者 | Jia Lu1; Fenli Zheng1,2; Guifang Li2; Feng Bian3; Juan An4 |
| 刊名 | Soil & Tillage Research
 |
| 出版日期 | 2016-04-01 |
| 期号 | 161页码:79-85 |
| 通讯作者邮箱 | flzh@ms.iswc.ac.cn |
| 关键词 | Soil erosion Soil aggregate loss Raindrop impact Runoff detachment The Mollisol region |
| 通讯作者 | Fenli Zheng |
| 英文摘要 |
Soil aggregates profoundly influence soil fertility and soil erosion. A large number of studies have showed
that soil aggregate loss was mainly affected by raindrop impact and runoff detachment during hillslope
erosion process; however, few attempts have been made to investigate which one plays the dominant
role in soil aggregate loss. Therefore, a laboratory study was conducted to quantify the effects of raindrop
impact and runoff detachment on soil erosion and soil aggregate loss during hillslope erosion processes.
A soil pan (8 m long, 1.5 m wide, and 0.6 m deep and with an adjustable slope gradient of 0–35 ) was
subjected to rainfall simulation experiments under two soil surface conditions: with and without
raindrop impact through placing nylon net over soil pan. Two rainfall intensities (50 and 100 mm h 1) of
representative erosive rainfall and two slope gradients (5 and 10 ) in the Mollisol region of Northeast
China were subjected to two soil surface conditions. The results showed that raindrop impact played the
dominant role in hillslope soil erosion and soil aggregate loss. Soil loss caused by raindrop impact was
3.6–19.8 times higher than that caused by runoff detachment. The contributions of raindrop impact to
hillslope soil erosion were 78.3% to 95.2%. As rainfall intensity and slope gradient increased, soil loss
caused by raindrop impact and runoff detachment both increased. The loss of each size aggregate was
greatly reduced by 46.6–99.4% after eliminating raindrop impact. Meanwhile, the contributions of
raindrop impact to the >2, 1–2, 0.5–1, 0.25–0.5 and <0.25 mm soil aggregate loss were 79.1% to 89.7%.
Eliminating raindrop impact reduced rainfall intensity effect and increased slope gradient impact on
aggregate loss. |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S0167198716300459 |
| 语种 | 英语 |
| WOS记录号 | WOS:000376705400010 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/7750]  |
| 专题 | 水土保持研究所_水保所科研产出--SCI_2016--SCI |
| 作者单位 | 1.Institute of Soil and Water Conservation, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, PR China 2.Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, PR China 3.College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, PR China 4.Institute of Water and Soil Conservation and Environmental Protection, Linyi University, Linyi, Shandong 276005, PR China |
| 推荐引用方式 GB/T 7714 | Jia Lu,Fenli Zheng,Guifang Li,et al. The effects of raindrop impact and runoff detachment on hillslope soil erosion and soil aggregate loss in the Mollisol region of Northeast China[J]. Soil & Tillage Research,2016(161):79-85. |
| APA | Jia Lu,Fenli Zheng,Guifang Li,Feng Bian,&Juan An.(2016).The effects of raindrop impact and runoff detachment on hillslope soil erosion and soil aggregate loss in the Mollisol region of Northeast China.Soil & Tillage Research(161),79-85. |
| MLA | Jia Lu,et al."The effects of raindrop impact and runoff detachment on hillslope soil erosion and soil aggregate loss in the Mollisol region of Northeast China".Soil & Tillage Research .161(2016):79-85. |
入库方式： OAI收割
来源：水土保持研究所
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