Modeling the sediment yield and the impact of vegetated filters using an event‐based soil erosion model—a case study of a small Canadian watershed |
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| Authors: | Gabriel Hould‐Gosselin Alain N Rousseau Silvio J Gumiere Dennis W Hallema Claudie Ratté‐Fortin Georges Thériault Eric van Bochove |
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| Institution: | 1. INRS–ETE, Québec, Québec, Canada;2. Département des Sols et de Génie Agroalimentaire, Université Laval, Québec, Québec, Canada;3. Agriculture and Agri‐Food Canada, Soils and Crops Research and Development Centre, Science and Technology Branch, Québec, Québec, Canada |
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| Abstract: | This paper presents the first application of the event‐based MHYDAS‐Erosion model to a small agricultural watershed under temperate climate conditions (Quebec, Canada). Simulation results based on observed and synthetic rainfall events revealed a bimodal behaviour of sediment yield. During high‐intensity rainfall events, most of the sediments reaching the watershed outlet originate from cropland. Meanwhile, during low‐intensity events, most of the sediments come from the drainage network. Furthermore, simulation results show that implementation of 5‐m and 20‐m wide vegetated filters throughout the watershed or at the edge of the most problematic fields (4% of the total fields) could reduce soil loss by 52% and 31%, respectively. The modeling framework could be used for the design and location of beneficial management practices such as grass strips and riparian zones Copyright © 2016 John Wiley & Sons, Ltd. |
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| Keywords: | hydrologic models agriculture soil erosion case studies |
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