%0 Journal Article
%T A SWAT Evaluation of the Effects of Climate Change on Renewable Water Resources in Salt Lake Sub-Basin, Iran
%A Negar Shahvari
%A Sadegh Khalilian
%J -
%D 2019
%R https://doi.org/10.3390/agriengineering1010004
%X Abstract Future climate change is projected to have significant impacts on water resources availability in many parts of the world. This research evaluated climate change impacts on runoff, aquifer infiltration, renewable water resources, and drought intensity in Salt Lake sub-basin, Iran, by the Soil and Water assessment tool (SWAT) model and the Standardized Precipitation Index (SPI) under A1B, A2, and B1 climatic scenarios for 2011每2030, 2046每2065, and 2080每2099, using 1986每2016 as the reference period. The model was calibrated and validated by the SWAT-CUP software and SUFI-2 algorithm. Nash每Sutcliffe (NS) coefficients (0.58 and 0.49) and the determination coefficients (R 2) (0.65 and 0.50) were obtained for the calibration and validation periods, respectively. In order to study the climatic condition in the study basin, drought intensity was calculated. Then, drought intensity was predicted using the SPI index for the period 2011每2030. The results showed that runoff, infiltration, as well as renewable water resources will decrease under all climatic scenarios. Renewable water resources will be approximately reduced 100 Mm 3 by the year 2100. The future projections suggest a regional increase of 2 ∼C in temperature and a 20% decrease in precipitation in the sub-basin. In particular, drought intensity will be increased in the future. In 2015, this index was ˋ1.31, and in 2016, the SPI index was lower than ˋ2. These projection scenarios should be of interest to water resources managers in tropical regions. View Full-Tex
%K climate change
%K SWAT model
%K runoff
%K infiltration
%K renewable water
%K drought
%U https://www.mdpi.com/2624-7402/1/1/4