The present study is about the dynamics of the vegetation landscapes of the Mbere Valley's National Park and its southern periphery (MVNP). The physical and human characteristics of this area, translated by an intertwining of natural, anthropic and institutional factors, predispose its vegetation cover to a dynamic which can be progressive or regressive according to the dominant factor. The present study aims at reconstituting the various space-time variations of the MVNP vegetation cover and its periphery between 1987 and 2014, and at determining the processes and the factors having supported these space-time variations of vegetation cover. The methodological step consists of an association of fieldwork and remote sensing in order to characterize the vegetation cover, to reconstitute the evolution of the vegetation cover and to determine the main factors of the processes of this evolution or dynamic. The diachronic analysis shows that the dynamics of the vegetation cover was marked by a progressive evolution between 1987 and 1999, and a regressive evolution between 1999 and 2014. On the base of fieldwork observations and the socioeconomic surveys, it arises that the dynamics of the vegetation cover of the valley of Mbere and its periphery is subjected to the combined influence of the natural conditions, from the recurring anthropic disturbances as well as the weight of regulatory measures.

The purpose of this study is to evaluate the viability of wildlife corridors between the Benue National Park and the Faro National Park through the hunting areas, by identifying the main threats to their integrity, mapping of land use, characterization of their flora and the wildlife inventory that frequents these corridors in order to propose measures for their sustainable management. Field observations, land use mapping from the 2016 Landsat 8 image classification, and 60 floristic surveys at six sites (corridors) on 20 m × 20 m plots treated under R resulted in the following results: nine types of activities were identified, including logging, agriculture, grazing and forestry. With gold panning the main threats to corridors, the species mostly used by these farmers are Piliostigma thonningii (82.674 ± 4.24), Combretum sp. (78.18 ± 4.01) and Tamarindus indica (75.06 ± 3.85) among the most threatened woody species. On the floristic level, vegetations under the influence of anthropic activities present a large number of rejections, a small number of adult stems. The Shannon diversity index varies between 4.30 and 5.07 in all corridors. On the other hand, the index of equitability varies from 0.50 to 0.59. On the faunal plan, 204 individuals, belonging to 12 animal species, grouped into 6 families frequent the corridors. This number is well below what was achieved in 2010 when there was a decrease of 1024 individuals in the corridors, a decrease rate of 83.38%. In the face of these threats, which risk irreversibly damaging the corridors, a restoration and conservation plan for these corridors that will integrate community management based on strengthening the participatory approach is essential.

This study focuses on the assessment of "the advancement of the mining front (gold panning) in and around protected areas". The aim of this article is to evaluate, using geomatics tools, the recent advance of the mining front (gold panning) in Benue National Park (PNB) and Bouba-Ndjidda (PNBN) for their planning purposes. We adopted a methodological approach articulated from the field surveys to the processing of satellite images and the integration of the data into a GIS. Thus, 30 gold panning sites were visited, including 16 in the PNB and 14 in the PNBN. From the mapping of the pressures exerted by this activity, it appears that 143.8 km and 73.8 km of cumulated linear were exploited respectively in the GNP and the PNBN; moreover, the results allowed us to detect that the surfaces degraded by gold panning are more important in Benue than in Bouba Ndjidda. The massive influx of migrants from the more populated areas of the Far North of Cameroon as well as neighboring countries (Chad, Nigeria and the Central African Republic) has not only brought about the growth of a pioneering agricultural front, but also the mining front, following the gold rush from 2009; which has led to huge environmental consequences in these protected areas.