Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie).
Environmental indicators are essential tools for tracking environmental risks especially land use degradation. Supporting theenvironmental evaluation and research items needs usually a heavy and costly field work. For these reasons, some methods and indicators of risks have gained in importance in...
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| Format: | Article |
| Language: | English |
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University "Hassiba Benbouali" de Chlef
2022-12-01
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| Series: | Revue Nature et Technologie |
| Subjects: | |
| Online Access: | http://193.194.82.220:80/index.php/natec/article/view/91 |
| _version_ | 1797633667329163264 |
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| author | Mohamed NOURI Makram BOUZIDI Walid REZGUI Fethia SOLTANI Mohamed Néjib REJEB |
| author_facet | Mohamed NOURI Makram BOUZIDI Walid REZGUI Fethia SOLTANI Mohamed Néjib REJEB |
| author_sort | Mohamed NOURI |
| collection | DOAJ |
| description |
Environmental indicators are essential tools for tracking environmental risks especially land use degradation. Supporting theenvironmental evaluation and research items needs usually a heavy and costly field work. For these reasons, some methods and indicators of risks have gained in importance in many countries and in international reports. As part of their commitment to transparency to real information, public authority increasingly uses a reduced number of indicators or select existent methods to report on major environmental issues. These economic and time justifications cannot nor ignore or hide the disadvantages of these methods apart from their validation areas especially in arid countries. The study concerned the application of a European method for the evaluation of the risks of desertification namely “the Mediterranean Desertification and Land Use or MEDALUS method”, which had deserved more researches to adapt it to the arid conditions. Indeed, testing this method to the desertification risks evaluation of the agricultural land-use in Tunisia has showed its limits. The review of parameters used and the re-calibration of the risks levels to the agricultural units have improved the results of this method in arid conditions. This improvement was limited about 10% (land degradation risks has reduced from 90.5% to 81% of surface studied) when adapted soil quality index to local conditions and re-calibration of risks levels were applied. But these results do not prevent that validation of the method would improve analyzes and understanding of this phenomenon in local conditions.
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| first_indexed | 2024-03-11T11:57:06Z |
| format | Article |
| id | doaj.art-b90a7c2955594801b48392228184b7ac |
| institution | Directory Open Access Journal |
| issn | 1112-9778 2437-0312 |
| language | English |
| last_indexed | 2024-03-11T11:57:06Z |
| publishDate | 2022-12-01 |
| publisher | University "Hassiba Benbouali" de Chlef |
| record_format | Article |
| series | Revue Nature et Technologie |
| spelling | doaj.art-b90a7c2955594801b48392228184b7ac2023-11-08T15:39:21ZengUniversity "Hassiba Benbouali" de ChlefRevue Nature et Technologie1112-97782437-03122022-12-011201Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie). Mohamed NOURI0Makram BOUZIDI1Walid REZGUI2Fethia SOLTANI3Mohamed Néjib REJEB4National institute of Research in rural engineering, water and forestry (INRGREF), Ariana, TunisiaNational institute of Research in rural engineering, water and forestry (INRGREF), Ariana, TunisiaNational institute of Research in rural engineering, water and forestry (INRGREF), Ariana, TunisiaNational institute of Research in rural engineering, water and forestry (INRGREF), Ariana, TunisiaNational institute of Research in rural engineering, water and forestry (INRGREF), Ariana, Tunisia Environmental indicators are essential tools for tracking environmental risks especially land use degradation. Supporting theenvironmental evaluation and research items needs usually a heavy and costly field work. For these reasons, some methods and indicators of risks have gained in importance in many countries and in international reports. As part of their commitment to transparency to real information, public authority increasingly uses a reduced number of indicators or select existent methods to report on major environmental issues. These economic and time justifications cannot nor ignore or hide the disadvantages of these methods apart from their validation areas especially in arid countries. The study concerned the application of a European method for the evaluation of the risks of desertification namely “the Mediterranean Desertification and Land Use or MEDALUS method”, which had deserved more researches to adapt it to the arid conditions. Indeed, testing this method to the desertification risks evaluation of the agricultural land-use in Tunisia has showed its limits. The review of parameters used and the re-calibration of the risks levels to the agricultural units have improved the results of this method in arid conditions. This improvement was limited about 10% (land degradation risks has reduced from 90.5% to 81% of surface studied) when adapted soil quality index to local conditions and re-calibration of risks levels were applied. But these results do not prevent that validation of the method would improve analyzes and understanding of this phenomenon in local conditions. http://193.194.82.220:80/index.php/natec/article/view/91Desrtification |
| spellingShingle | Mohamed NOURI Makram BOUZIDI Walid REZGUI Fethia SOLTANI Mohamed Néjib REJEB Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie). Revue Nature et Technologie Desrtification |
| title | Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie). |
| title_full | Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie). |
| title_fullStr | Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie). |
| title_full_unstemmed | Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie). |
| title_short | Risques de désertification : Sensibilité et limites de la méthode Medalus dans les zones semi-arides (centre de la Tunisie). |
| title_sort | risques de desertification sensibilite et limites de la methode medalus dans les zones semi arides centre de la tunisie |
| topic | Desrtification |
| url | http://193.194.82.220:80/index.php/natec/article/view/91 |
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