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Le Sahel burkinabe est caracterise par une forte degradation des ressources naturelles. Cette regression est imputable a des facteurs naturels et anthropiques. La presente etude concerne les bas-fonds du sous bassin versant du Nakanbe-Dem situe dans la limite australe du Sahel. Dans cette zone dominee par l’agriculture pluviale et l’elevage extensif, les zones humides revetent une importance capitale. Face a leur degradation continue, la participation des communautes est necessaire pour une gestion durable des bas-fonds. Cette etude analyse les indicateurs endogenes de la degradation des bas-fonds de la zone soudano-sahelienne. Des donnees d’enquetes semi-structurees ont ete collectees aupres de 325 exploitants de six bas-fonds. Des statistiques descriptives et une analyse factorielle par correspondance (AFC) ont ete appliquees. Les resultats montrent que les paysans percoivent clairement la degradation des bas-fonds. Les paysans se servent d’elements meteorologiques, floristiques et physiques pour caracteriser l’etat de degradation des bas-fonds. La disparition de plusieurs especes et l’apparition d’especes ubiquistes leur permettent d’evaluer la degradation des terres des bas-fonds. Ces indicateurs endogenes varient en fonction du sexe et du niveau d’instruction. L’etude a souligne l’importance des connaissances endogenes dans l’analyse du phenomene de degradation des bas-fonds. Elle suggere la necessite d’en tenir compte desormais dans la mise en oeuvre des techniques de restauration des bas-fonds degrades.Mots cles : Indicateurs endogenes ; degradation des bas-fonds ; perceptions ; bassin versant, Burkina Faso.   English Title: Farmers' Perceptions of lowland's natural resources degradation in Sudano Sahelian area: case of Nakanbe-Dem Sub-Watershed in Burkina FasoThe Burkina Faso Sahel is characterized by a great degradation of natural resources. This regression is due to natural and anthropogenic factors. This study concerns the lowlands of the Nakanbe-Dem sub-watershed, located in the northern limit of the Sahel. In this area dominated by rain farming and extensive livestock, wetlands are very important. In this context of continuous lowlands degradation, the participation of communities is necessary for a sustainable management. This study analyses the local indicators of lowlands’ degradation in Sudano-Sahelian zone. Data from semi-structured surveys were collected from 325 farmers in six lowlands of Nakanbe-Dem sub-watershed. Descriptive statistics and correspondence factor analysis (CFA) were applied. The results show that farmers clearly perceive the degradation of the lowlands. Farmers use meteorological, floristic and physical elements to characterize the state of lowlands degradation. The loss of several species and the appearance of ubiquitous species allow them to assess the degradation of the lowlands. These local indicators vary according to sex and education level. Farmers also apprehend degraded lowlands flora reshaping and identify taxa indicative of lowland ecosystems health. The study highlighted the importance of the endogenous knowledge in the analysis of lowlands’ degradation. It suggests the need to take into account local indicators in the implementation of lowlands’ restoration techniques.  Keywords: endogenous indicators, lowlands degradation, perception, Watershed, Burkina Faso.

international journal of biological and chemical sciences

Perceptions paysannes de la dégradation des ressources naturelles des bas-fonds en zone soudano-sahélienne: cas du sous bassin versant du Nakanbé-Dem au Burkina Faso