Assessment of changes in agricultural crop yields and inflows to Lake Urmia in Zarrinehrud River basin due to changing irrigation systems from surface to pressurized using the SWAT model

Document Type : Original Article

Authors

1 MS of Water Resources Engineering Dept., Tarbiat Modares University.,Tehran.,Iran

2 Assoc. Prof. of Water Resources Engineering Dept., Tarbiat Modares University .,Tehran.,Iran

3 Ph.D of hydraulic structures Dept., Tarbiat Modares University.,Tehran.,Iran

Abstract

Lake Urmia (LU) is the largest salt lake in the country. The lake’s level has extremely declined due to the increase in irrigated agricultural lands and the recent droughts. This condition has caused many environmental problems for the lake and the surrounding area. To resolve this problem, increasing irrigation efficiency is expressed as one the fundamental solutions to reduce water consumption and improve the rate of river inflows to LU. To assess this strategy, Zarrinerud River basin as the largest catchment of the LU basin was chosen as the study area to investigate effectiveness of this strategy. Furthermore, the Soil and Water Assessment Tools (SWAT) model was chosen and applied for the required simulations. For this, in the first step, the model was calibrated and validated using 6 gauging stations. Then, the basin’s actual evapotranspiration and crop production were calibrated, which resulted R2 more than 80%. The calibrated model along with the applied arrangements in the model were used to simulate changes in irrigation methods from surface (efficiency of 38%) to sprinkler (efficiency of 60%) and drip irrigation (efficiency of 80%). The results showed up to 20% increase in crop yields comparing with the current condition. But, the annual volume of water entering the lake didn’t significantly change and the decrease of water table was more severe. Therefore, it concluded that the pressurized irrigation cannot be considered as a fundamental measure to save Lake Urmia. 

 

Keywords

References

Abbaspour, K.C., Yang, J., Maximov, I., Siber, R., Bogner, K., Mieleitner, J., Zobrist, J. and Srinivasan, R. (2007). Modelling hydrology and water quality in the pre-alpine/alpine Thur watershed using SWAT. Journal of Hydrology, 333: 413-430.
Ahmadzadeh, H., Morid, S. and Delavar, M. (2012).  Assessment of agricultural water productivity using the  SWAT: A case study in the Zarrinerud basin. Master of Scince Thesis, Water Resources Engineering Department, Tarbiat Modares University, Tehran, Iran. (in farsi)
Alizadeh, a. 2005. Pressurized irrigation system design. (in Farsi)
Allen, R.G., Pereira, L.S., Raes, D., Smith, M., 1998. Crop evapotranspiration: guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56, Rome, 300 pp.
  Arabi, M., Govindaraju, R.S., Engel, B. J., Frankenberger, and Hantush, M.M. (2007). Sensitivity analysis of sediment processes with SWAT. 4th International SWAT Conference, UNESCO-IHE, Institute for Water Education, Delft, the Netherlands, July 4-6.
Arnold, J.G., Srinivasan, P., Muttiah, R.S. and Williams J.R. (1998). Large area hydrologic modelling and assessment. Part I. Model development. Journal of the American Water Resources Association, 34: 73–89
Easterling,W.E., Rosenburg, N.J., Mckenney, M.S., Jones, C.A., Dyke, P.T. and Williams, J.R. (1992). Preparing the erosion productivity impact calculator (EPIC) model to simulate crop response to climate change and the direct effects of CO2. Agricultural and forest Meteorology.59:17-34
Faramarzi, M., Yang, H., Schulin, R. and Abbaspour, K.C. (2010). Modeling wheat yield and crop water productivity in Iran: Implications of agricultural water management for wheat production. Agricultural Water Management, 97: 1861-1875.
Gosain, A., Rao, S., Srinivasan, R. and Reddy, N.G. (2005). Return flow assessment for irrigation command in the Palleru River basin using SWAT model. Hydrological processes, 19: 673-682.
Hooghoudt, S.B. (1940). Bijdrage tot de kennis van enige natuurkundige grootheden van de grond. Versl. Landbouwkd. Onderz. 46:515-707 .
Immerzeel, W., Gaur, A. and Zwart, S. (2008). Integrating remote sensing and a process-based hydrological model to evaluate water use and productivity in a south Indian catchment. Agricultural water management, 95: 11-24.
Iran environmental organization  , comprehensive management plan of Urmia Lake, Project of  conservation of Iranian wetlands , 2008.(in Farsi)
Kang, S., Gu, B., Du, T., Zhang, J., 2003. Crop coefficient and ratio of transpiration to evapotranspiration of winter wheat and maize in a semi-humid region. Agric. For. Meteorol. 59, 239–254.
Kang, Y., Liu, HJ., 2006. Sprinkler irrigation scheduling of winter wheat in the North China Plain using a 20 cm standard pan. Springer- Verlag, DOI 10.1007/s00271-006-0042-z
Kaushal, K., Luna, B., Anju, G., Biju, G., Sreedhar, A., Kiran, J. and Narasimhan B. (2011). Spatial mapping of agricultural water productivity using SWAT model in Upper Bhima Catchment, India. Irrigation and Drainage. DOI: 10.1002/ird.618
Morid, S., Moghadasi, M. 1390. report of agricultural water allocation model in drought conditions in Lake Urmia basin, Project of  conservation of Iranian wetlands.(in Farsi)   
 
Neitsch, S.L.,  Arnold, J.G., Kiniry, J.R. and Williams, J.R. (2011). Soil and water assessment tool theoretical document (version 2009), Texas water resource institute technical report.
Schuol, J., Abbaspour, K.C., Srinivasan, R. and Yang, H. (2008). Estimation of freshwater availability in the West African sub-continent using the SWAT hydrologic model. Journal of  Hydrology, 352: 30–49.
Iranian Ministry of Jahade-Agriculture (MOJA), Agricultural Statistics and the Information Center ,Tehran, Iran, 2007.
West Azerbaijan Agriculture of Jahad Organization, Agricultural Statistics and the Information Center , West Azerbaijan, Iran, 2011.(in Farsi)
Williams, L. and Ayars, J. (2005). Grapevine water use and the crop coefficient are linear functions of the shaded area measured beneath the canopy. Agricultural and forest meteorology, 132: 201-211.
Yang, Y., Wang, G. and Jingshan, Y.U. (2009). Groundwater depth simulation based on Beijing county-level SWAT application tool.College of Water Sciences, Beijing Normal University, Key Laboratory for Water and Sediment Sciences, Ministry of Education, Beijing, P.R.China, 100875.
Ziaei, L. 2012. Method of calculating irrigation efficiency in the basin scale and water balance and water use in watersheds considering the phenomenon "increasing effectiveness of the water cycle " Case Study: Zayandehrood basin. 9th International Congress of Civil Engineering, 9-11 May, Isfahan.(in Farsi)
 
 
 
 
Iranian Journal of Irrigation & Drainage
Volume 8, Issue 1 - Serial Number 45
November and December 2014
Pages 1-15

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