[ Influence des feux de brousse sur l’évolution des paysages forestiers dans la réserve de faune d’Abokouamékro ]
Volume 31, Issue 1, June 2017, Pages 41–46
Yao Julien AGOUALE1
1 Département de Géographie, Université Alassane Ouattara, Bouaké, Côte d’Ivoire
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The vegetation forests and wildlife reserve of Abokouamékro are under strong anthropogenic pressures. The aim of this study is to identify the types of land occupancy and to analyse the landscape dynamics under the effect of bush fires. The diachronic approach from remote sensing using the Landsat ETM satellite imagery of 2000 and Landsat 8 Oli-Tirs of 2016, as well as the verification of the checkpoints and the assessment of the field results were the methods used. The results underscored that this forest surface declined from 1.75% of the total area from 2000 to 2016. They are most affected because they experience a drastic decrease of 357 hectares during this period. On the other hand, burnt areas increased by 242 hectares, that is to say 1, 18 %. Stable areas have experienced disturbances provoked by agricultural activities and bush fires. Generally speaking, the vegetation in this reserve has undergone serious change, due not only to the abundance of human activities, but mainly to the bushfires because of the armed revolt of the neighbouring villages. In that respect, these bush fires have more disadvantages than advantages.
Author Keywords: burnt areas, remote sensing, forest, Landscape dynamics, disturbance.
Volume 31, Issue 1, June 2017, Pages 41–46
Yao Julien AGOUALE1
1 Département de Géographie, Université Alassane Ouattara, Bouaké, Côte d’Ivoire
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The vegetation forests and wildlife reserve of Abokouamékro are under strong anthropogenic pressures. The aim of this study is to identify the types of land occupancy and to analyse the landscape dynamics under the effect of bush fires. The diachronic approach from remote sensing using the Landsat ETM satellite imagery of 2000 and Landsat 8 Oli-Tirs of 2016, as well as the verification of the checkpoints and the assessment of the field results were the methods used. The results underscored that this forest surface declined from 1.75% of the total area from 2000 to 2016. They are most affected because they experience a drastic decrease of 357 hectares during this period. On the other hand, burnt areas increased by 242 hectares, that is to say 1, 18 %. Stable areas have experienced disturbances provoked by agricultural activities and bush fires. Generally speaking, the vegetation in this reserve has undergone serious change, due not only to the abundance of human activities, but mainly to the bushfires because of the armed revolt of the neighbouring villages. In that respect, these bush fires have more disadvantages than advantages.
Author Keywords: burnt areas, remote sensing, forest, Landscape dynamics, disturbance.
Abstract: (french)
Les formations forestières de la réserve de faune d’Abokouamékro subissent de fortes pressions anthropiques. Le but de cette étude est d’identifier les types d’occupation du sol et d’analyser la dynamique paysagère sous l’effet des feux de brousse. L’approche diachronique à partir de la télédétection via le traitement des images satellitaire de Landsat ETM de 2000 et Landsat 8 Oli-Tirs de 2016 ainsi que la vérification des points de contrôle et la validation des résultats de terrain ont été les méthodes utilisées. Les résultats ont révélé que les superficies des formations forestières ont régressé de 2000 à 2016 de 1,75% de la superficie totale. Elles sont les plus affectées car elles connaissent une régression drastique de 357 hectares durant cette période. Par contre, les surfaces brûlées ont augmenté de 242 hectares soit 1,18%. Les zones stables ont connu des perturbations liées aux activités agricoles et aux feux de brousses. D’une façon générale, la végétation dans ladite réserve a subi une importante modification liée au foisonnement des activités humaines mais, essentiellement aux feux de brousse depuis la révolte armée des villages riverains. Ces feux de brousse présentent à cet effet plus d’inconvénients que d’avantages.
Author Keywords: surfaces brûlées, télédétection, forêt, dynamique paysagère, perturbations.
How to Cite this Article
Yao Julien AGOUALE, “Bushfire’s impacts on the evolution of the forest landscapes in Abokouamékro fauna reserve,” International Journal of Innovation and Scientific Research, vol. 31, no. 1, pp. 41–46, June 2017.
