@article{fdi:010048201,
  title = {{W}ater balance and vegetation change in the {S}ahel : a case study at the watershed scale with an eco-hydrological model},
  author = {{B}oulain, {N}icolas and {C}appelaere, {B}ernard and {S}{\'e}guis, {L}uc and {F}avreau, {G}uillaume and {G}ignoux, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {S}ahel, a semiarid area set in a fragile context, has been undergoing dramatic climate and land-use changes since the middle of the 20th century. {T}he effects of these changes on the water cycle are analyzed using a coupled eco-hydrological model at the scale of a small representative catchment. {T}hree land cover situations, corresponding to the 1950, 1975, and 1992 states, are simulated with two contrasted rain seasons, to produce the respective and combined effects of these two factors on the catchment water balance. {T}he latter is largely dominated by rain-season evapotranspiration, representing some 60-65% of annual rainfall for the wet year in the three land use situations, but over 85% for the dry year. {I}n absolute terms, evapotranspiration appears more sensitive to land-use changes than to the climate, but with variations that remain below 10%. {T}hese evapotranspiration figures are corroborated by field observations. {R}elative runoff sensitivity is much higher, nearly in the same 1.5:1 ratio as the annual rainfall for the climate effect, and with an increase by a factor of about 2.6 for the land-use effect. {C}onfronting long-term runoff and water table dynamics evidences a direct linkage between these two processes.},
  keywords = {{C}limate change ; {E}vapotranspiration ; {H}ydrological processes ; {L}and use ; {N}iger ; {R}unoff},
  booktitle = {},
  journal = {{J}ournal of {A}rid {E}nvironments},
  volume = {73},
  numero = {12},
  pages = {1125--1135},
  ISSN = {0140-1963},
  year = {2009},
  DOI = {10.1016/j.jaridenv.2009.05.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048201},
}