Impact of climate change on the inflow of Charvak Lake by three rivers (Pskem, Koksu, Chatkal), Uzbekistan, during the post-soviet period (1990-2022) modelled by QSWAT+

Vista sencilla de ítem
dc.creatorEshboyev, N.
dc.creatorGafurov, Zafar
dc.creatorKenjabaev, Shavkat
dc.creatorAlikhanov, B.
dc.creatorMuminov, S.
dc.creatorPulatov, Y.
dc.date2026-01
dc.date2026-02-15T14:26:03Z
dc.date2026-02-15T14:26:03Z
dc.date.accessioned2026-06-27T18:40:10Z
dc.descriptionOur study examines the impact of climate change on the hydrology of the Charvak Lake watershed in Uzbekistan, focusing on streamflow from the Pskem, Chatkal, and Koksu rivers during the 1990–2022 period. The analysis evaluated the contributions of snowmelt and glaciers to river flows while addressing modelling limitations, including the absence of dedicated land classes for snow cover and glaciers. This study, conducted under the CGIAR NEXUS Policy Innovation initiative, focused on hydrological modeling using the QSWAT+ tool to better understand these dynamics. Calibration efforts improved model performance, with statistical parameters indicating a correlation coefficient (R) of 0.77, a coefficient of determination (R²) of 0.59, and a percent bias (PBIAS) of –15%, demonstrating reasonable agreement between observed and simulated data. However, the Nash–Sutcliffe Efficiency (NSE) was low at 0.27, highlighting challenges in accurately simulating extreme flows during peak and low-flow periods. Mann–Kendall and Sen’s slope tests showed no statistically significant trends in streamflow for both simulated and observed flows (p = 0.69 and p = 0.31, respectively), though observed data suggested a slight potential increase likely linked to glacier melt.
dc.identifierhttps://hdl.handle.net/10568/181596
dc.identifier.urihttp://hdl.handle.net/123456789/162242
dc.languageen
dc.rightsOpen Access
dc.sourceEshboyev, N.; Gafurov, Z.; Kenjabaev, S.; Alikhanov, B.; Muminov, S.; Pulatov, Y. 2026. Impact of climate change on the inflow of Charvak Lake by three rivers (Pskem, Koksu, Chatkal), Uzbekistan, during the post-soviet period (1990-2022) modelled by QSWAT+. Water Conservation and Management, 10(1):1-8. doi: http://doi.org/10.26480/wcm.01.2026.01.08
dc.subjectclimate change impacts
dc.subjectlakes
dc.subjectrivers
dc.subjectstream flow
dc.subjecthydrological modelling
dc.titleImpact of climate change on the inflow of Charvak Lake by three rivers (Pskem, Koksu, Chatkal), Uzbekistan, during the post-soviet period (1990-2022) modelled by QSWAT+
dc.typeJournal Article

Archivos

Colecciones

Instituto Internacional para el Manejo del Agua (IWMI)