Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023217 |
Determining and Modeling Dominant Processes of Interrill Soil Erosion | |
Zhang, X. C. | |
2019 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:1页码:4-20 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Understanding the dominant process of interrill soil erosion is imperative to better modeling interrill sediment delivery rates. The objectives are to (1) determine the limiting erosion process (detachment vs. transport) that controls interrill erosion under the study conditions, (2) quantify the effects of water and/or sediment influxes from upslope on downslope sediment transport and interrill erosion, and (3) evaluate the ability of commonly used hydraulic parameters for simulating interrill sediment delivery. Runoff, sediment delivery, and raindrop splash were simultaneously collected from two flumes (1.8mx0.5m) and a 2.5-cm slot between the flumes for three intensities of 60, 90, and 120mm/hr at three slopes of 9%, 18%, and 27% under two cover treatments. Results showed that slot splash rates were consistently greater than flume wash rates, indicating that sediment transport capacity limited interrill sediment delivery under the study conditions. Soil detachment by raindrop impact was more influenced by surface water depth, while sediment transport capacity by flow velocity. The former played a bigger role in determining interill sediment delivery under detachment-limited cases while the latter under transport-limited conditions. Linear correlation coefficients between sediment delivery rates and hydraulic predictors were 0.545 for shear stress, 0.946 for stream power, 0.867 for unit stream power, and 0.948 for an empirical lumped model that includes a rainfall intensity term. Stream power and the empirical model were better predictors for interrill sediment delivery. However, their predictive abilities need to be assessed more rigorously at various impact levels of rainfall kinetic energy. |
英文关键词 | interrill erosion process interrill erosion modeling raindrop detachment raindrop-impacted flow transport |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459536500001 |
WOS关键词 | SEDIMENT TRANSPORT CAPACITY ; RAINDROP-IMPACT ; SLOPE STEEPNESS ; PARTICLE-SIZE ; WASH DYNAMICS ; OVERLAND-FLOW ; SHEET EROSION ; DETACHMENT ; RUNOFF ; SPLASH |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21550 |
专题 | 资源环境科学 |
作者单位 | USDA ARS, Grazinglands Res Lab, El Reno, OK 73036 USA |
推荐引用方式 GB/T 7714 | Zhang, X. C.. Determining and Modeling Dominant Processes of Interrill Soil Erosion[J]. WATER RESOURCES RESEARCH,2019,55(1):4-20. |
APA | Zhang, X. C..(2019).Determining and Modeling Dominant Processes of Interrill Soil Erosion.WATER RESOURCES RESEARCH,55(1),4-20. |
MLA | Zhang, X. C.."Determining and Modeling Dominant Processes of Interrill Soil Erosion".WATER RESOURCES RESEARCH 55.1(2019):4-20. |
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