Hydrological soil behavior in areas with semi-arid vegetation (Beni Chougrane Mountains, Algeria)
| Autor: | Marta Ginovart, Khalladi Mederbal, Antoni M.C. Verdú, M. Teresa Mas, Yahia Boukhari, Ramon Josa |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Matemàtiques, Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia, Universitat Politècnica de Catalunya. BIOCOM-SC - Grup de Biologia Computacional i Sistemes Complexos |
| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Plant Science Arid regions vegetation 01 natural sciences Biochemistry Enginyeria agroalimentària::Ciències de la terra i de la vida::Edafologia [Àrees temàtiques de la UPC] Hydrology (agriculture) Genetics Molecular Biology Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Hydrology Sediment 04 agricultural and veterinary sciences Cell Biology Vegetation Arid Soil water 040103 agronomy & agriculture Erosion 0401 agriculture forestry and fisheries Plant cover Environmental science Animal Science and Zoology Surface runoff Vegetació -- Algèria |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| ISSN: | 1336-9563 0006-3088 |
| Popis: | In northern Algeria, the physical degradation of land by water erosion is one of the most serious forms of degradation. As is well known, vegetation plays an important role against water erosion. In the mentioned area the potential vegetation called maquis is currently characterized by an advanced stated of degradation, often ranging between sparse cover and bare soil. In the Oued Fergoug watershed belonging to the Beni Chougrane Mountains (NW of Algeria), a trial was carried out with a mini rainfall simulator designed by ORSTOM to evaluate the runoff rate and the sediment load at experimental plot scale and in a situation of bare soil. The experimental layout took into account two different surface slopes, three different rainfall intensities, and three levels of initial soil water content. The highest runoff values observed exceeded 0.50 mm min−1 and the maximum sediment load yield was 94.2 g L−1 per square meter. Summarizing, the intensity of rain is the main factor for runoff generation, independently of the slope and the initial soil water content values. Since vegetation cover is a crucial component in maintaining stable slopes and limiting soil losses, the most effective practice to protect bare soil against erosion is to provide a protective ground plant cover in this area. |
| Databáze: | OpenAIRE |
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