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| Titel |
Agri-spillways as soil erosion protection tools in conventional sloping vineyards (Montes de Málaga, Spain) |
| VerfasserIn |
Jesús Rodrigo-Comino |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250146119
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| Publikation (Nr.) |
 EGU/EGU2017-10121.pdf |
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| Zusammenfassung |
| Rainfall causes soil erosion on Mediterranean sloping vineyards (>25˚ of slope
inclination), however, little is known about information related to cheap, effective and
suitable soil erosion protection measures. In the vineyards of the Montes de Málaga
(southern Spain), a concrete land management practice against soil erosion is actually
conducted by building tilled rills to down-slope direction to canalize water and
sediments. We decided to call them agri-spillways. In this study, by carrying out runoff
experiments, we assessed two agri-spillways (from 10 m to 15 m length) under extreme
conditions. A motor driven pump mobilizes a constant water inflow about of 1.33 L
s−1during between 12 and 15 minutes (≈1000 litres). Finally, we observed: i) a high
capacity of these agri-spillways to canalize a large volume of water and sediments;
and, ii) higher speed of water flow (from 0.16 m s−1to 0.28 m s−1) and sediment
concentration (SC) rates with ratios up to 1538.6 g l−1). By comparing among
them, the speed of water flow and the SC were much higher in one of tested rills,
which was 5 meters length less and 7 degrees more of inclination. So, we concluded
that these agri-spillways, after correctly planning and long term maintenance from
contribution area to down-slope direction, can be function as a potential tool for
designing suitable and cheap plans to protect the soil in Mediterranean sloping
vineyards.
Acknowledgements
Firstly, we acknowledge the farmer’s syndicate UPA (Unión de Pequeños Agricultores)
and the wine-grower Pepe Gámez (Almáchar) for providing access to the study area.
Secondly, we thank the students of the Bachelor course and Master from Trier University for
their hard efforts in the field and laboratory works in the Almáchar campaign. Thirdly, we
acknowledge the geomorphology and soil laboratory technicians María Pedraza and Rubén
Rojas of GSoilLab (Málaga University) for the soil analysis. Finally, we also thank the
Ministerio de Educación, Cultura y Deporte de España (Spanish Ministry of Education,
Culture and Sport, Spain) for the Scholarship grant (FPU) awarded to J. Rodrigo-Comino. |
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