No abstract

Climate change, desertification, and biodiversity are critical factors in the ongoing multilateral mobilization for sustainable management of natural resources. In order to investigate the administration of a national park, this chapter focuses firstly on the directions taken by the international normative arsenal in the Cameroonian context of forest governance and specifically the reminder of some regulatory texts concerning national parks. After addressing the issue of management of protected areas in the dry Far North of Cameroon, the second part examined the special case of the Mozogo-Gokoro National Park, located in this region, with reference to the results of a survey and administrative report consultations. The analysis reveals a gap between international and national legal instruments and their actual implementations. The park’s status as a plant conservation model in Sudano-Sahelian zone is mostly attributable to empirical local practices adapted to the resilience of vegetation.

A b s t r a c t A r t i c l e I n f oThe aim of this work was to study the impact of wood cutting and bush fire on the dynamics of regeneration of vegetation in the Guinea savanna of Adamawa. Floristic inventories were made by using quadrat method of two factors (shrubby and savanna), three treatments (logging without fire, with fire and control) and three repetitions (parcels). Within each savanna, 09 sites of 10m×10m were delimited using the pocket for both savannas. Data analyses with Xlstat software showed that the regeneration rate is very high in the savanna logging without bush fire. The vegetation structure of both savannas following the dispersal of species in «L» representing the evolution and the higher rate of the regeneration of species after wood logging. The Shannon index respectively in the tree savannas and shrubby savanna is 3.74% and 2.70% for the site cut without fire, 3.61% and 2.53%, for the site cut with fire and 3.75% and 2.80% for the control site. These Shannon indexes show that bush fire and wood cut influence the regeneration of the ligneous. Forbidden wood cut, uncontrolled fire, strict sanction and awareness of the population are the solution for a sustainable management of Guinean savannas.

Abstract:In order to reduce the increase of fuel prices, and improve the living conditions of the population, a study was carried out by Convention No. 1/IRAD/PCS ESA2-SDCC in the region of Garoua in Cameroon. The study aimed to characterize the behaviour of J. curcas associated with V. unguiculata in marginal soils in the Sahel region in order to improve the livelihoods of the farmers and promote its domestication in rural areas. It also aimed at pointing out the influence of two implantation techniques of J. curcas on the germination, the different quantities of NPK and cow dung, planting techniques and association with V. unguiculata var. lori on growth parameters of development and yield of J. curcas on the degraded marginal soils in the region. The experimental design was a completely randomized block with five levels of fertilization (F0: control; F1: 50 g; F2: 100 g of NPK 15-20-15; F3: 1 kg and 2 kg of cow dung) per plant. Two types of establishment propagator (Ge) and direct seedling (Se) with three replications were used. Data were analysed by Stratigraphic + and XLSTAT. Results showed that the propagator germination was higher than the direct seeding, 95% and 40% respectively. The Principal Component Analysis (PCA) of the parameters of growths and yield of J. curcas showed high correlation between the production of the leaves and the length of the leaves (R = 0.861; P ≤ 0.001). These parameters were correlated with the Biplot (F1 and F2) to 53.24%. It was opposed to the positives and imperfect correlation between the height and the recover parameters (R = 0.486; P ≤ 0.05). The treatments 100 g of NPK per plant and 2 kg of cow dung per plant induced strongly the development and yield of J. curcas and V. unguiculata adapted to marginal soils.

A study was carried out in the Mounts Mandara to assess the diversity of edible plant species, to identify the use of the edible products, and to determine their socioeconomic value. Interviews of a sampling population were conducted randomly in 5 zones with 5 villages each and in rural and urban markets; a sample of 1020 persons was interviewed to evaluate and quantify the various products and determine their flows. The results showed that the edible plant products used in the area were: fruits, leaves, flowers, seeds, tubers, roots, barks and stems. These products were harvested from 61 plant species belonging to 29 families in which 54 species were fruit trees, 11 species produced leaves and / or flowers, 4 species produced seeds. The total annual quantity of products harvested was 1080.9 t in which: fruit (725.62 t); leaves (97.5 t), flowers (1.96 t), and seeds (255.82 t). The seeds of Parkia biglobosa were the most useful part by the populations of Mounts Mandara making "dawa-dawa" some traditional aromatic for a sauce. Exploited products were an important source of food and income for the people. Annually, exploited products generated at whole of 60 783 975 F CFA. The fruits were sold for 17 542 375 F CFA, the seeds yielded 36 676 900 F CFA, the contribution of the leaves was 5 452 820 F CFA and that of the flowers was 724880 F CFA, "dawa-dawa" brought, very popular, bring in a modest sum of 787 000 F CFA. Local people were developing interest in exploiting different bush products. The exploitation activities of the various products were intensifying; the requested species must be domestication to ensure the sustainable management.