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2011-12-01

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cc-by-nc-sa (c) Pacheco Betancur, Edinson Efren et al., 2011
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/49308

Runoff and sediment production in a Mediterranean basin under two different land uses

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Abstract

This study analyses the infl uence of two diff erent land uses on the hydrology of the Vernegà experimental basin between the years 2005 and 2009. It is located in the Northeast of the Iberian Peninsula and is infl uenced by a Mediterranean climate, with an average annual rainfall of 646 mm. The study of rainfall distributi on in the 1982 to 2009 period shows that the majority occurs during autumn, winter, and spring representi ng 33.2%, 25.5%, and 25.7% respecti vely of the total annual rainfall. Surface runoff is concentrated from October to June. Between 2005 and 2009, total runoff was 242.38 mm at the"Bosc" gauging stati on, which drains an area of 1.60 km2, and 298.54 mm at the"Campàs" gauging stati on, which drains an area of 2.57 km2 and is located at the outlet of the basin. More than 80% of the total surface runoff yielded during the study period corresponds to the 2005-2006 hydrologic year. Finally, Campàs gauging stati on registers a higher total runoff than Bosc gauging stati on. Part of this phenomenon may be due to the intercepti on of rainfall and plant biomass in the forested area of the basin. In relati on to the sediment yield, an overall increase in the two basins has been detected. Recent forest management practi ces undertaken in the catchment area are considered to be one of the most important reasons for this change.

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Conques hidrogràfiques, Hidrologia, Geomorfologia fluvial, Mediterrani

Subject (English)

Watersheds, Hydrology, Fluvial geomorphology

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PACHECO BETANCUR, Edinson Efren, et al. Runoff and sediment production in a Mediterranean basin under two different land uses. Cuaternario y Geomorfología. 2011. Vol. 25, num. 3-4, pags. 103-114. ISSN 0214-1744. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/49308

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