TY - JOUR
T1 - Evaluating the impact of climate change on groundwater resources in a small Mediterranean watershed
AU - Ertürk, Ali
AU - Ekdal, Alpaslan
AU - Gürel, Melike
AU - Karakaya, Nusret
AU - Guzel, Cigdem
AU - Gönenç, Ethem
N1 - Publisher Copyright:
© 2014 Elsevier B.V.
PY - 2014/11/15
Y1 - 2014/11/15
N2 - Western Mediterranean Region of Turkey is subject to considerable impacts of climate change that may adversely affect the water resources. Decrease in annual precipitation and winter precipitation as well as increase in temperatures are observed since 1960s. In this study, the impact of climate change on groundwater resources in part of Köyceğiz-Dalyan Watershed was evaluated. Evaluation was done by quantifying the impacts of climate change on the water budget components. Hydrological modeling was conducted with SWAT model which was calibrated and validated successfully. Climate change and land use scenarios were used to calculate the present and future climate change impacts on water budgets. According to the simulation results, almost all water budget components have decreased. SWAT was able to allocate less irrigation water because of the decrease of overall water due to the climate change. This resulted in an increase of water stressed days and temperature stressed days whereas crop yields have decreased according to the simulation results. The results indicated that lack of water is expected to be a problem in the future. In this manner, investigations on switching to more efficient irrigation methods and to crops with less water consumption are recommended as adaptation measures to climate change impacts.
AB - Western Mediterranean Region of Turkey is subject to considerable impacts of climate change that may adversely affect the water resources. Decrease in annual precipitation and winter precipitation as well as increase in temperatures are observed since 1960s. In this study, the impact of climate change on groundwater resources in part of Köyceğiz-Dalyan Watershed was evaluated. Evaluation was done by quantifying the impacts of climate change on the water budget components. Hydrological modeling was conducted with SWAT model which was calibrated and validated successfully. Climate change and land use scenarios were used to calculate the present and future climate change impacts on water budgets. According to the simulation results, almost all water budget components have decreased. SWAT was able to allocate less irrigation water because of the decrease of overall water due to the climate change. This resulted in an increase of water stressed days and temperature stressed days whereas crop yields have decreased according to the simulation results. The results indicated that lack of water is expected to be a problem in the future. In this manner, investigations on switching to more efficient irrigation methods and to crops with less water consumption are recommended as adaptation measures to climate change impacts.
KW - Groundwater dependent ecosystems
KW - Hydrological modeling
KW - Köyceğiz-Dalyan Watershed
KW - Regional climate models
KW - SWAT
UR - http://www.scopus.com/inward/record.url?scp=84907407776&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2014.07.001
DO - 10.1016/j.scitotenv.2014.07.001
M3 - Article
C2 - 25064798
AN - SCOPUS:84907407776
SN - 0048-9697
VL - 499
SP - 437
EP - 447
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -
