The Mont Péko national Park (MPNP) located to the West of Côte d'Ivoire underwent severe human pressure related to a succession of political and military crises from 2002 to 2011. Since 2013, the Ivoirians government is engaged in a process of rehabilitation of this park. This study aimed to evaluate the dynamics of human pressures from 1996 to 2018, in order to allow the manager of the park to better focus their awareness and protection activities. To achieve this, the RAPPAM method of WWF international was adopted for the collection of data. The study identified 10 types of pressures of which farm is the most severe followed by pressure on land, logging, bush fires, the establishment of settlements, poaching and pollution. The intensity of pressures on the MPNP doesn’t significantly vary depending on the areas, but this varies according to the socio-political gradient in time. The pressures have evolved gradually from 2002 to 2011 before beginning to decline progressively until 2018. Currently, except for uncontrolled bush fires, all pressures declined significantly, or even disappear for some. The existence of a variety of pressures on the MPNP to disturbing proportions is therefore related in part to the lack of monitoring during the crises. The anthropization of the MPNP found the springs of its acceleration in the existence of an armed gang who have organized, systematic exploitation of the resources.
Pterocarpus erinaceus est une espèce largement utilisée par les populations des zones sahéliennes et soudaniennes. Cependant, cette espèce est menacée par l’exploitation abusive des peuplements naturels. La présente étude vise à déterminer un idéotype de profondeur de semis des graines de Pterocarpus erinaceus pour relever le taux de germination de production des plantules dans le cadre de sa régénération. Pour ce faire, les graines ont été décortiquées et enfouies à différentes profondeurs (0,5 cm, 1 cm, 1,5 cm) sans traitement spécifique. L’évaluation de la vigueur des plantules a été basée sur des paramètres morphologiques qui sont : la hauteur (Ht), le diamètre au collet (Dcol), le nombre de feuille (Nf), la longueur des feuilles (Logfe) et la largeur des feuilles (Largfe). Les résultats ont montré que les meilleurs taux de germination (90,66 %) sont obtenus avec les semis enfouis à 0,5 cm du sol. Les faibles taux (41 %) de germinations ont été obtenus avec les semences enfouies à 1,5 cm. Cette expérimentation dénote que le semis superficiel des graines de Pterocarpus erinaceus est recommandé pour sa multiplication.
The threat which is on the forests and wooded spaces of Africa and particularly those of Côte d'Ivoire is accentuated over the years. The quoted leading causes are the land pressure related to demography, the anarchistic exploitation of the forest woody plants and itinerant agriculture. In many cases, the afforestation is the recommended palliative measure. But with which woody plants does one retimber in Côte d'Ivoire? Which assessment are previous initiatives made? On several occasions the exotic woody plants with rapid growth were used without success. The main objective of this study is to identify local woody plants with rapid growths of which the use will contribute to a significant degree to fast regeneration of our forests, degraded spaces and the post-farming fallow. Floristic inventories and measurements were carried out on the stems of Albizia adianthifolia and Albizia zygia in elementary plots of 400 m ² (20m X 20m). Two local arborescent Leguminous plants with rapid growth were identified for this purpose. They were: Albizia adianthifolia and Albizia zygia. The experiments showed that these species reach the maximas of their growth in height and thickness as from nine (9) years. The sowing of the fallow and/or spaces degraded by these woody species supports the fast regeneration of these degraded spaces.
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