Sediment load change with erosion processes under simulated rainfall events
文献类型：期刊论文
| 作者 | Sun, Liying1,2; Fang, Haiyan2; Cai, Qiangguo2,6; Yang, Xihua3; He, Jijun4; Zhou, John L.5; Wang, Xunming2 |
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 29期号:6页码:1001-1020 |
| 关键词 | rainfall simulation erosion experiments rill erosion interrill erosion sediment load |
| ISSN号 | 1009-637X |
| DOI | 10.1007/s11442-019-1641-y |
| 通讯作者 | Sun, Liying(sunliying@igsnrr.ac.cn) |
| 英文摘要 | It is of great significance to quantify sediment load changing with erosion processes for improving the precision of soil loss prediction. Indoor rainfall experiments were conducted in 2 rainfall intensities (90 mmh(-1) and 120 mmh(-1)), four slope gradients (17.60%, 26.80%, 36.40%, 46.60%) and 2 slope lengths (5 m, 10 m). Erosion processes are divided into five stages. Results show that sediment yield is mainly sourced from rill erosion, contributing from 54.60% to 95.70% and the duration of which is extended by slope gradients. Sediment load and sediment concentration are significantly different along erosion stages, with the highest values in rill development stage (S-IV). Surface flow velocities (interrill and rill) demonstrate less significant differences along erosion stages. Rainfall intensity increases sediment load in all stages, with up to 12.0 times higher when changing from 90 to 120 mmh(-1). There is an increasing trend for sediment load and sediment concentration with the rising slope gradient, however, fluctuations existed with the lowest values on 26.80% and 36.40%, respectively, among different treatments. The slope gradient effects are enhanced by rainfall intensity and slope length. Results from this study are important for validating and improving hillslope erosion modelling at each erosion stage. |
| WOS关键词 | SOIL-EROSION ; RILL EROSION ; LOESS PLATEAU ; INTERRILL EROSION ; WATER EROSION ; RAINDROP-IMPACT ; SLOPE GRADIENT ; STEEP SLOPES ; CLAY LOAM ; RUNOFF |
| 资助项目 | National Natural Science Foundation of China[41471229] ; Open Project Fund from the State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau[A314021402-1601] ; National Key Research and Development Program of China[2016YFA0601900] |
| WOS研究方向 | Physical Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:000471039300010 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China ; Open Project Fund from the State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/58724]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Sun, Liying |
| 作者单位 | 1.CAS & MWR, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.New South Wales Off Environm & Heritage, POB 644, Parramatta, NSW 2124, Australia 4.Capital Normal Univ, Base State Lab Urban Environm Proc & Digital Mode, Beijing 100048, Peoples R China 5.Univ Technol Sydney, Sch Civil & Environm Engn, 15 Broadway, Sydney, NSW 2007, Australia 6.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Liying,Fang, Haiyan,Cai, Qiangguo,et al. Sediment load change with erosion processes under simulated rainfall events[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2019,29(6):1001-1020. |
| APA | Sun, Liying.,Fang, Haiyan.,Cai, Qiangguo.,Yang, Xihua.,He, Jijun.,...&Wang, Xunming.(2019).Sediment load change with erosion processes under simulated rainfall events.JOURNAL OF GEOGRAPHICAL SCIENCES,29(6),1001-1020. |
| MLA | Sun, Liying,et al."Sediment load change with erosion processes under simulated rainfall events".JOURNAL OF GEOGRAPHICAL SCIENCES 29.6(2019):1001-1020. |
入库方式： OAI收割
来源：地理科学与资源研究所
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