Use of terraces to mitigate the impacts of overland flow and erosion on a catchment
P. Kovář, H. Bačinová, J. Loula, D. Fedorovahttps://doi.org/10.17221/786/2015-PSECitation:Kovář P., Bačinová H., Loula J., Fedorova D. (2016): Use of terraces to mitigate the impacts of overland flow and erosion on a catchment . Plant Soil Environ., 62: 171-177.
The paper presents the impact of a historical system of terraces constructed centuries ago to mitigate the effect of a steep slope on overland flow. Systems of this type were constructed in past centuries by land owners, who then ploughed the land and grew crops on it. They used stones collected from the local agricultural fields as their terracing material. The influence of terraces on overland flow was simulated using the KINFIL. The overland flow is therefore reduced by greater infiltration of extreme rainfall excess flows on the terraces, and the KINFIL model shows to what extent the system of terraces can mitigate the resultant flood and soil erosion. The Knínice locality in North-Western Bohemia, with seven terraces and six field belts between them, was selected as the experimental catchment area. The results compare hydrographs with N-year recurrence of rainfall-runoff time, where N = 10, 20, 50, and 100 years, and the hydraulic variables, e.g. overland flow discharges of a design rainfall, hydraulic depths, flowing water velocity, and shear stress. The comparison provides hydraulic results with terraces and without terraces. The contrast between the results with and without terraces shows the positive role of the system of terraces in protecting the field belts.Keywords:
extreme precipitation; infiltration intensity; soil protection
Amore Elena, Modica Carlo, Nearing Mark A, Santoro Vincenza C (2004): Scale effect in USLE and WEPP application for soil erosion computation from three Sicilian basins. Journal of Hydrology, 293, 100-114 https://doi.org/10.1016/j.jhydrol.2004.01.018Aksoy Hafzullah, Kavvas M. Levent (2005): A review of hillslope and watershed scale erosion and sediment transport models. CATENA, 64, 247-271 https://doi.org/10.1016/j.catena.2005.08.008Beven K.J. (2006): Rainfall-Runoff Modelling. The Primer. Chichester, John Wiley & Sons, 360.Fread D.L. (1989): Flood routing models and the manning n. In: Yen B.C. (ed.): Proceedings of International Conference Centennial of Manning’s Formula and Kuichling’s Rational Formula. Charlottesville, 699–708.Hallema Dennis W., Moussa Roger (2013): A model for distributed GIUH-based flow routing on natural and anthropogenic hillslopes. Hydrological Processes, , n/a-n/a https://doi.org/10.1002/hyp.9984Hrádek F., Kovář P. (1994): Computation of substitute storm rainfall intensities. Vodní Hospodářství, 11: 49–53. (In Czech)Kibler D.F., Woolhiser D.A. (1970): The Kinematic Cascade as a Hydrologic Model. Colorado State University, Fort Collins, Hydrology Paper No. 39, 28.Kovář P., Cudlín P., Heřman M., Zemek F., Korytář M. (2002): Analysis of flood events on small river catchments using the KINFIL model. Journal of Hydrology and Hydromechanics, 50: 158–171.Kovář P., Vašová D., Hrabalíková M. (2011): Mitigation of surface runoff and erosion impacts on catchment by stone hedgerows. Soil and Water Research, 4: 153–164.Kutílek M., Nielsen D.R. (1994): Soil Hydrology. Catena Verlag. Cremlingen – Destedt, 98–102.Lax Peter, Wendroff Burton (1960): Systems of conservation laws. Communications on Pure and Applied Mathematics, 13, 217-237 https://doi.org/10.1002/cpa.3160130205Lőw J., Míchal I. (2003): Landscape character. Lesnická práce, Kostelec nad Černými Lesy. (In Czech)Maidment D.R. (1992): Grid-based Computation of Runoff: A Preliminary Assessment. Davis, Hydrologic Engineering Center, US Army Corps of Engineers.Marshall E.J.P, Moonen A.C (2002): Field margins in northern Europe: their functions and interactions with agriculture. Agriculture, Ecosystems & Environment, 89, 5-21 https://doi.org/10.1016/S0167-8809(01)00315-2Merot Philippe (1999): The influence of hedgerow systems on the hydrology of agricultural catchments in a temperate climate. Agronomie, 19, 655-669 https://doi.org/10.1051/agro:19990801Morel-Seytoux H.J., Verdin J.P. (1981): Extension of the SCS Rainfall Runoff Methodology for ungaged Watersheds. Report FHWA/RD-81/060, Colorado State University, Fort Collins, 79.Morel-Seytoux Hubert J. (1982): Analytical results for prediction of variable rainfall infiltration. Journal of Hydrology, 59, 209-230 https://doi.org/10.1016/0022-1694(82)90088-9PHILIP J. R. (1957): THE THEORY OF INFILTRATION. Soil Science, 83, 345-358 https://doi.org/10.1097/00010694-195705000-00002Rawls W.J., Brakensiek D.L. (1983): A procedure to predict Green and Ampt infiltration parameters. In: ASCE Proceedings Conference Advances in Infiltration, Chicago.Šamaj F., Brazdil R., Valovič J. (1983): Daily depths of extreme rainfalls in 1901–1980 in ČSSR. In: Study Proceedings of SHMU. ALFA, Bratislava, 19–112. (In Czech and Slovak)Štibinger J. (2011): Infiltration capacities. Stavební obzor, 2: 78–83. (In Czech)Vetter T., Rieger A.-K., Nicolay A. (2014): Disconnected runoff contributing areas: Evidence provided by ancient watershed management systems in arid north-eastern Marmarica (NW-Egypt). Geomorphology, 212, 41-57 https://doi.org/10.1016/j.geomorph.2013.10.002Zhao T., Sun B., Gibo S., Wang X., Zhou J. (2000): Loess landslide in China and its mechanism. Science Bulletin of the Faculty of Agriculture, University of Reyukyus, 47: 113–121.