Evaluating and modelling splash detachment capacity based on laboratory experiments
文献类型：期刊论文
| 作者 | Wu, Bing1; Wang, Zhanli2,3; Zhang, Qingwei2; Shen, Nan2; Liu, June4 |
| 刊名 | CATENA
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 176页码:189-196 |
| 关键词 | Splash detachment capacity Rainfall intensity Slope gradient Rainfall kinetic energy Flow depth |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2019.01.009 |
| 通讯作者 | Wang, Zhanli(zwang@nwsuaf.edu.cn) |
| 英文摘要 | Splash erosion is recognized as an important process of water erosion on agricultural land, but evaluating and modelling splash detachment capacity on steep slopes using loessial soil were not fully studied. The objectives of this study are: (1) to evaluate the effects of slope gradient (S) and rainfall intensity (I) on splash detachment capacity (SDr), (2) to select the key rainfall physical parameters and hydraulic parameters affecting splash detachment capacity, (3) to establish new and more accurate experimental models between splash detachment capacity (SDr) and these key parameters on steep slopes for loess regions. The experiment was conducted at slopes of 12.23%, 17.63%, 26.8%, 36.4%, 40.4% and 46.63% under rainfall intensities of 48, 60, 90, 120, 138 and 150 mm h(-1) , respectively, using simulated rainfall. Results showed that the equation between splash detachment capacity (SDr) with both parameters of rainfall intensity (I) and slope gradient (S) (i.e. SDr = 0.000126 In (0.36S(-0.3)I(1.3) - 14)) could predict SDr well with R-2 = 0.85 and Nash-Sutcliffe model efficiency (NSE) = 0.71. SDr was more sensitive to rainfall intensity than to slope gradient. The rainfall kinetic energy (KE) was the key rainfall physical parameter and the mean flow depth (h) was the key hydraulic parameter affecting SDr. The equation between SDr with both parameters of KE and h (i.e. SDr = 0.000164 In (0.0031KE(1.13) h(-0.3) - 4.5)) could satisfactorily predict SDr with R-2 = 0.85 and Nash-Sutcliffe model efficiency (NSE) = 0.81. The new equations (i.e. SDr = 0.000126 ln (0.36S(-0.3)I(1.3) - 14) and SDr = 0.000164 In (0.0031KE(1.13)h(-0.3) - 4.5)) could help in controlling water erosion in the loess region of China. |
| WOS关键词 | SOIL-EROSION ; RAINFALL INTENSITY ; SEDIMENT TRANSPORT ; RAINDROP-IMPACT ; KINETIC-ENERGY ; SHEET EROSION ; STEEP SLOPES ; LOESS ; FLOW |
| 资助项目 | National Natural Science Foundation of China[41471230] ; National Natural Science Foundation of China[41830758] ; National Natural Science Foundation of China[41601282] ; National Natural Science Foundation of China[41171227] ; National Key Research and Development Program of China[2016YFC0402401] ; National Key Research and Development Program of China[2017YFD0800502] ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-C2] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000462107000016 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/48589]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Zhanli |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Civil Engn, Xian 710049, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Bing,Wang, Zhanli,Zhang, Qingwei,et al. Evaluating and modelling splash detachment capacity based on laboratory experiments[J]. CATENA,2019,176:189-196. |
| APA | Wu, Bing,Wang, Zhanli,Zhang, Qingwei,Shen, Nan,&Liu, June.(2019).Evaluating and modelling splash detachment capacity based on laboratory experiments.CATENA,176,189-196. |
| MLA | Wu, Bing,et al."Evaluating and modelling splash detachment capacity based on laboratory experiments".CATENA 176(2019):189-196. |
入库方式： OAI收割
来源：地理科学与资源研究所
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