Abstract:
The deterioration of the ecosystems constitutes a threat for the survival of the populations. The global objective of this research is to determine the human activity effects on the spatio - temporal plant formation evolution in the northwest of Benin.
The technique of Schwartz (1995) permitted to interrogate 184 agricultural households in order to know the perception of the populations on the direct factors of pressures on the plant table setting. The software XLSTAT has been used for the Factorial analysis of the Correspondences in order to determine the values of importance that constitute the main reasons of deterioration of the plant table setting.
The pictures Landsat TMS of 1986, 2000 and 2017 have been used for the analysis diachronique of the plant table setting. To the exit of this methodology, he/it comes out again that with 0,89 value of importance, agriculture is respectively the first direct factor of destruction of the consistent plant table setting of the production of wood coal (0,55), of the wood of œuvre (0,36) and of raising (0,18). The analysis of the dynamics of the units of soil occupation reveals a regression of 4205,97 hectare between 1986-2000 and 20260,82 hectares between 2000-2017. On the other hand, the mosaics of cultures and fallows, the plantations and the agglomerations as for them knew a progression of 3587,83 hectare between 1986-2000 and 6611,53 hectares between 2000-2017. Facing this situation of deterioration of the woody, him urge to afforest and to sensitize the different actors on the lasting natural resource management.
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