@article{fdi:010088728,
  title = {{I}mpact of land-use change on karst spring response by integration of surface processes in karst hydrology : the {ISPEEKH} model},
  author = {{A}l {K}houry, {I}. and {B}oithias, {L}. and {B}ailey, {R}. {T}. and {O}llivier, {C}hlo{\'e} and {S}ivelle, {V}. and {L}abat, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{K}arst groundwater represents a source of freshwater for a quarter of the world's population. {M}odeling the hydrological behavior of karst aquifers while accounting for the spatial variability of the recharge processes and the land-use change impacts on water availability remains a challenge for karst water resources management. {T}herefore, this study proposes a new semi-distributed hydrological model named {I}ntegration of {S}urface {P}roc{E}ss{E}s in {K}arst {H}ydrology ({ISPEEKH}) for simulating the surface-underground water flows in karst-dominated catchments. {ISPEEKH} couples the restructured version of the {S}oil and {W}ater {A}ssessment {T}ool ({SWAT}+) with a non-linear three-reservoir groundwater model that represents the epikarst and matrix-conduit flow components in a karst aquifer. {ISPEEKH} was applied to the {B}aget karst catchment (13.25 km(2)) in the {P}yr & eacute;n & eacute;es mountains of southwest {F}rance, characterized by a conduit-dominated spring flow and low surface runoff. {T}he model simulated the catchment daily discharge satisfactorily, with {NSE} = 0.67 and {R}-2 = 0.68 for the 2008-2013 calibration period, and {NSE} = 0.65 and {R}-2 = 0.69 for the 2014-2018 validation period. {T}he catchment evapotranspiration and discharge amounted to 33 % and 67 % of the average annual precipitation, respectively, and nearly 80 % of the discharge was attributed to spring flow. {T}he matrix-to-conduit flow accounted for 4-7 % of the monthly spring flow during the high-flow period ({D}ecember to {J}une), and up to 22 % during the low-flow period ({J}uly to {O}ctober). {ISPEEKH} was then used to assess the hydrological response of the {B}aget catchment to land-use change scenarios of afforestation and deforestation for wood production and pasture development. {A}fforestation of the full catchment area did not alter the catchment hydrology significantly. {D}eforestation for wood production reduced annual evapotranspiration by 12-18 % and increased annual recharge by 7-8 %, resulting in annual discharge rising by 6-9 %. {T}hese changes in the water balance components were most noticeable during the low-flow season and would augment freshwater availability. {C}onversely, deforestation for pasture development raised annual evapotranspiration by 13-17 % while reducing annual recharge by around 7 % and discharge by 5-7 %. {T}hese changes in the hydrological components were most remarkable during the high-flow season and affected discharge below 2.5 m(3).s(-1).},
  keywords = {{K}arst hydrological modeling ; {D}istributed modeling ; {M}odified {SWAT} plus ; {L}and-use change ; {P}yrenees mountain range},
  booktitle = {},
  journal = {{J}ournal of {H}ydrology},
  volume = {626},
  numero = {{B}},
  pages = {130300 [24 ]},
  ISSN = {0022-1694},
  year = {2023},
  DOI = {10.1016/j.jhydrol.2023.130300},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088728},
}