Volume 7, Issue 4 (2019)                   ECOPERSIA 2019, 7(4): 233-244 | Back to browse issues page

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1- Rangeland & Watershed Management Department, Soil & Water Faculty, University of Zabol, Iran , shademanf@yahoo.com
2- Rangeland & Watershed Management Department, Soil & Water Faculty, University of Zabol, Iran
Abstract:   (4046 Views)
Aims: Accurate and timely estimates of the water balance are necessary for the maintenance of surface and underground waters. The purpose of the present study was to investigate effect of land use change on the water balance of Gharib Abad Watershed using the WetSpa model.
Material & Methods: The present study was carried out in Gharib Abad Watershed in Zahedan with a total area of 9924.4ha in Sistan and Baluchestan Province. Firstly, the model was implemented for the statistical period of 2008-2016 using the land use map of 2016, so that to calibrate the model, the statistical period of 2008-2012 and to validate the model the statistical period of 2012-2016 were selected. Then in order to investigate the effect of the land use change on water balance, all data and maps used in the model were maintained fixed (except for the land use map) and the model was simulated using the land use map of 2000.
Findings: In the land use of 2000 from total precipitation, the evaporation rate was 69.60%. In addition, 4.13% of the total precipitation was stopped and evaporated by vegetation cover. Moreover, 26.27% have been converted to runoff. While in the land use of 2016 the evaporation increased by 9.01%, the vegetation cover decreased by 2.42%, the runoff decreased by 6.59%. Also,  and  were identified as the most sensitive parameters.
Conclusion: The WetSpa mode has well estimated the components of the water balance of watershed and has the necessary efficiency in arid areas.
 
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Article Type: Original Research | Subject: Ecohydrology
Received: 2019/04/22 | Accepted: 2019/12/2 | Published: 2019/12/21
* Corresponding Author Address: Zahedan- Enghelab Boulevard-Vahdat Residential Complex

References
1. Seager R, Ting M, Held I, Kushnir Y, Lu J, Vecchi G, et al. Model projections of an imminent transition to a more arid climate in southwestern North America. Science. 2007;316(5828):1181-4. [Link] [DOI:10.1126/science.1139601]
2. Misra RK, Rose CW. An examination of the relationship between erodibility parameters and soil strength. Aust J Soil Res. 1995;33(4):715-32. [Link] [DOI:10.1071/SR9950715]
3. Bayat B. Simulation of daily stream flow and the effects of land use changes using WetSpa model in GIS (case study: Merek Watershed, Kermanshah Province)[Dissertation]. Tehran: Shahid Beheshti University; 2010. [Persian] [Link]
4. Derafshi Kh. The role of land use change on the components of hydrological balance in Kan watershed. The 8th National Conference on Watershed Management Sciences and Engineering, 2012 May 16-17, Lorestan, Iran. Karaj: Watershed Management Society of Iran; 2012. [Persian] [Link]
5. Liu YB, De Smedt F. WetSpa extension, a GIS-based hydrologic model for flood prediction and watershed management [Dissertation]. Belgium: Vrije Universiteit Brussel; 2004. [Link]
6. Javidan N, Bahremand A, Javidan R, Onogh M, Komaki CB. Impacts of land use change scenarios on water balance components using bahg Wetspa model (case study: Ziarat watershed, Golestan Province). J Watershed Manag Res. 2018;9(17):168-181. [Persian] [Link]
7. Daraei S, Bahremand A, Karimi H. Evaluation of the effect of land use changes on subsurface flow using WetSpa model, case study: Horo-Dehno Watershed. Watershed Eng Manag. 2019;11(2):392-407. [Persian] [Link]
8. Azinmehr M. Simulation of the effect of land use change scenarios on flow hydrograph of Dinour Basin using Wetspa distributed-hydrological model [Dissertation]. Gorgan: Gorgan University of Agricultural and Natural Resources Sciences; 2012. pp. 1-113. [Persian] [Link]
9. Yousefvand M. Quantitative evaluation of effects of land use change on the floodwater of Bahram Jou Watershed of Khorramabad using satellite imagery and the WetSpa model [Dissertation]. Khorramabad: Lorestan University; 2016. [Persian] [Link]
10. Yaghubi F, Bahremand A, Nura N. Investigation the water balance of Chehel Chay Watershed through daily flow simulation using Wetspa model. 1st National Conference on Natural Resources Research of Iran, 2010 October 20-21, Kurdistan, Iran. 2010. [Persian] [Link]
11. Nurmohamed R, Naipal S, De Smedt F. Hydrologic modeling of the Upper Suriname River basin using WetSpa and arcview GIS. J Spat Hydrol. 2006;6(1):1-17. [Link]
12. Rwetabula J, De Smedt F, Rebhun M. Prediction of runoff and discharge in the Simiyu River (tributary of Lake Victoria, Tanzania) using the WetSpa model. Hydrol Earth Syst Sci Discuss. 2007;4(2):881-908. [Link] [DOI:10.5194/hessd-4-881-2007]
13. Bahremand A. Simulating the effects of reforestation on floods using spatially distributed hydrologic modeling and GIS [Dissertation]. Brussels: Vrije Universiteit Brussel; 2006. [Link]
14. De Smedt F, Liu YB. Wetspa model (instruction and application). Kabir A, Bahremand A, Mehrazin M, translators. 1st Edition. Mashhad: Arastoo; 2015. [Persian] [Link]
15. McCuen RH, Snyder WM. A proposed index for comparing hydrographs. Water Resour Res. 1975;11(6):1021-4. [Link] [DOI:10.1029/WR011i006p01021]
16. Nash JE, Sutcliffe JV. River flow forecasting through conceptual models part I-A discussion of principles. J Hydrol. 1970;10(3):282-90. [Link] [DOI:10.1016/0022-1694(70)90255-6]
17. Nazar Gikloo S. Effect of land use on floodwater behavoiur using WetSpa model in Aharchay Watershed [Dissertation]. Zabol: Zabol University; 2013. [Persian] [Link]
18. Safari A, De Smedt F, Moreda F. WetSpa model application in the distributed model intercomparison project (DMIP2). J Hydrol. 2012;418-419:78-89. [Link] [DOI:10.1016/j.jhydrol.2009.04.001]
19. Mashari Eshghabad S, Nohegar A, Babaeian I, Ershadi C. Evaluating a continuous hydrological model's ability to simulate peak flows with short time step (case study: Zoshk Basin-Mashhad). J Watershed Manag Res. 2018;8(16):1-10. [Persian] [Link]
20. Safari A, De Smedt F. Improving WetSpa model to predict streamflows for gaged and ungaged catchments. J Hydroinform. 2013;16(4):758-71. [Link] [DOI:10.2166/hydro.2013.216]
21. Kabir A. Application and development of spatially-distributed hydrological model of Wetspa for runoff simulation in Gorganroud Basin, Golestan Province [Dissertation]. Tehran: Islamic Azad University, Science and Research Branch; 2010. [Persian] [Link]
22. Bahremand A, Corluy J, Liu Y, De Smedt F. Stream flow simulation by WetSpa model in Hornad River basin, Slovakia. In: Van Alphen J, Van Beek E, Taal M, editors. Floods, from defence to management. London: Taylor-Francis Group; 2005. pp: 67-74. [Link]
23. Dahmardeh Ghaleno MR. Runoff simulation using WetSpa distributed hydrological model in Ziarat Watershed of Golestan Province, Iran. ECOPERSIA. 2018;6(1):11-20. [Link]
24. Rahmati H, Ansari H, Ziaee AN, Zeinivand H. Evaluation of WetSpa model for rainfall-runoff simulation in semi-arid and mountainous watersheds (case study: Bar Arye Watershed). J Irrig Sci Eng. 2017;40(2):75-87. [Persian] [Link]
25. Mohammadi M, Zeinivand H, Moradi H, Pourghasemi H, Farazjoo H. Investigating the effects of land use on runoff generation using WetSpa model. Ecohydrology. 2016;2(4):357-69. [Persian] [Link]

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