A study was conducted on the exploitation of natural resources and the sustainable management of the vegetation of the Ngaoundéré cliff. Structured and semi-structured interviews were conducted with 350 people, 50 per village. The data obtained were supplemented by direct field observations. Data analysis using Excel, STATGRAPHICS Plus 5.0 and XLSTAT showed that farmers (88.93%), breeders (80.07%), craftsmen (49.29%), hunters (28.93%) are the main operators of the resources of the cliff. The products exploited are involved in food (55.28%), medicine (30.51%), crafts (53.34%), and trade (43.54%). The most commonly used species in the cliff are Borassus aethiopum (100%) and Mangifera indica (100%) in the diet, Isoberlinia doka (68.17%) as firewood, Khaya senegalensis (63.50%) in the medicine, Piliostigma thonningii (100%) for artisanal use and edible NTFP (40, 63%) in the trade. Faced with this exploitation of the biodiversity of the vegetation of the cliff, a forest management plan has been developed in a spirit of community management based on the participatory approach which invites all actors and social partners to take part in the decision making based on consensus between the conservative trend and the local population.

With this lysine-derived part, lysine has a favourable (or essential) effect maintaining stable condition without breaking even after NH2 deletion in the animal or human body. As further suggestions: Several water soluble vitamin B groups; flavine-adenine dinucleotide, pantothenic acid, and cobamamide (B12) have similar two groups in their own chemical structure and they act as coenzyme [1]. It is thought that this (two similar groups) in the chemical structure gives the material to work as a special effect in the body as a coenzyme. The activating effect of several water soluble B-group vitamins might be resulted from the emission of energy with the turmoil on pending in the centre of the molecule. In another expression, the rotation or vibration or seesawing of the two parts among the molecule. Here, the pairs of the molecule had to be not the same structure but to be the structure of similarity. Through our theoretical research it is considered that the structure of lysine-derived material (C6H12N2O3) is similar to the structure of several water soluble B-group vitamins (cobamamide (B12), flavine-adenine dinucleotide, pantothenic acid).