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Climate Change and Its Impact on Runoff and Sediment Yield (Case Study: Dez River Dam, Iran)

New Prospects in Environmental Geosciences and HydrogeosciencesAdvances in Science, Technology & Innovation(2022)

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Abstract
Climate change is one of the leading topics in today’s research because of its large-scale impact on hydrological processes. Simulation models like SWAT can be used to investigate the impact of climate change if they are calibrated and validated properly. In this research, a watershed in southwestern Iran was used as a case study and runoff and sediment calibrated with good performances for duration of 1990–2010 and validated from 2010 to 2017. The results showed that precipitation and temperature have a major upward trend. In addition, climate change increases the runoff and sediment yields in the watershed. Moreover, garden crops would be increased while cereal yields would be decreased.
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Key words
Erosion,Water security,Rainfall runoff,Sediment yield,SWAT model
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