Investigating the effect of changing the cropping pattern on Water Resources in Molla Sadra Dam Basin using the System Dynamics method

Document Type : Research Paper

Authors

1 Ph.D. Student, Department of Hydrology and Water Resources, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz

2 Department of Hydrology and Water Resources, Faculty of Water & Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

3 Associate Professor, Department of Hydrology and Water Resources, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz

4 Ph.D. Graduated,Department of Hydrology and Water Resources, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz

5 Professor, Department of Civil Engineering (Water), Faculty of Civil Engineering, Tabriz University, Tabriz

Abstract

In recent years, system dynamics has been used as one management approach to simulate water resource systems. In this study, we tried to simulate the water resources in the Molla Sadra Dam basin (in the north of Fars province and south of Iran) by system dynamics. For this purpose, subsystems of economic, groundwater level changes, groundwater volume changes, surface water, and the whole system were investigated in the VENSIM software. Simulation of the performance of upstream and downstream aquifers of the area and Mulla Sadra Dam reservoir was investigated during the years 2008 to 2019. The 12 different scenarios were presented for this purpose. In Scenario 11, replacing rice with sesame raised the income of the downstream farmers in the Molla Sadra Dam by 54%. The farmers downstream of Mulla Sadra Dam will make about 114 million per year (in this scenario). In this scenario, we can still farm the lower areas of Mulla Sadra dam but with less water.

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  • Receive Date: 14 March 2023
  • Revise Date: 19 November 2023
  • Accept Date: 07 April 2024
  • Publish Date: 07 April 2024