1993
DOI: 10.19182/remvt.9424
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Pluviosité et productivité des herbages de l'aire pastorale de Wiidu Thiengoli au Ferlo (Nord Sénégal). Estimation des charges fréquentielles

Abstract: Les caractéristiques pluviométriques et leurs influences sur la production des herbages ont été étudiées à partir de 15 années d'observation (1974-1988) autour du forage de Wiidu Thiengoli situé dans le Nord Sénégal. Les résultats font apparaître une très forte variabilité temporelle des précipitations et de la production. Un modèle simple de simulation de cette production en fonction de la pluviosité a été élaboré. Les charges fréquentielles établies à partir de cette formulation et de la série chronologique … Show more

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“…Sahelian vegetation is therefore characterized by a high degree of heterogeneity. On the one hand, the factors that determine this heterogeneity are essentially related to water and, on the other hand, to the factors linked to the action of herds (due to the importance of pastoral activities in this zone) [5]. The vegetation in the Sahel consists of a herbaceous stratum, mainly composed of annual plants and a sparse woody stratum dominated by thorny plants [6].…”
Section: Introductionmentioning
confidence: 99%
“…Sahelian vegetation is therefore characterized by a high degree of heterogeneity. On the one hand, the factors that determine this heterogeneity are essentially related to water and, on the other hand, to the factors linked to the action of herds (due to the importance of pastoral activities in this zone) [5]. The vegetation in the Sahel consists of a herbaceous stratum, mainly composed of annual plants and a sparse woody stratum dominated by thorny plants [6].…”
Section: Introductionmentioning
confidence: 99%