@article{fdi:010087868,
  title = {{C}haracterization of surface water-groundwater relations in an agrosystem with strong climatic constraints in the central-western groundnut basin : case of the {S}ob and {D}iohine watersheds in the {N}iakhar {O}pse ({S}enegal)},
  author = {{F}aye, {W}. and {F}all, {A}.{N}. and {O}range, {D}idier and {F}leury, {L}aurence  and {D}o, {F}r{\'e}d{\'e}ric and {J}ourdan, {C}. and {R}oupsard, {O}. and {K}ane, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{G}roundwaters are the most useful water reserve for the populations of the west-central groundnut basin, where surface water resources are temporary and the deep aquifer is difficult to access and of poor quality. {I}n this {S}ahelian millet-producing area, soil moisture dynamics are an important factor in agricultural yields. {A}nd trees, by their ability to provide shade due to canopy and their hydraulic lift properties of their deep roots, are possible assets for managing water useful for crops. {T}herefore, knowledge of the dynamics of infiltration and lateral surface runoff is essential for a better understanding of the relationship between surface water and water in the soil profile. {T}he study area covers the {S}ob and {D}iohine catchments of 86,03km2 and 112,4km2 respectively in the {P}opulation, {H}ealth and {E}nvironment {O}bservatory of {N}iakhar ({OPSE}). {O}ur observations are based on the monitoring of the variation of the {S}tatic {L}evel ({SL}), the conductivity and the salinity of a network of 231 wells distributed in the studied basins, coupled with an experimental device of 6 piezometers on a toposequence of 370 m long. {T}he study shows a strong mineralization of the aquifers with salinity rates up to 2.5%, despite agroundwater recharge directly linked to the rainwater infiltration. {T}here is a very high local heterogeneity of salt contents in the wells, which seems to underline the multiple origins of the salt, and a relative homogeneity of the static levels is noted.},
  keywords = {{EAU} {DE} {SURFACE} ; {EAU} {SOUTERRAINE} ; {RELATION} ; {SURVEILLANCE} ; {AQUIFERE} ; {AGROFORESTERIE} ; {HUMIDITE} {DU} {SOL} ; {SOL} {CULTIVE} ; {AGRICULTURE} ; {INFILTRATION} ; {PLUIE} ; {RUISSELLEMENT} ; {SALINITE} ; {MINERALISATION} ; {METHODOLOGIE} ; {TRAITEMENT} {DE} {DONNEES} ; {BANQUE} {DE} {DONNEES} ; {PIEZOMETRIE} ; {QUALITE} {DE} {L}'{EAU} ; {BASSIN} {VERSANT} ; {SENEGAL} ; {ZONE} {SAHELIENNE} ; {NIAKHAR} {REGION} ; {SOB} {BASSIN} {VERSANT} ; {DIOHINE} {BASSIN} {VERSANT}},
  booktitle = {},
  journal = {{C}limat et {D}{\'e}veloppement},
  volume = {29},
  numero = {},
  pages = {36--46},
  ISSN = {1840-5452},
  year = {2020},
  URL = {https://www.documentation.ird.fr/hor/fdi:010087868},
}