Investigating desertification process of Khash plain with emphasis on water and vegetation criteria

Document Type : Research Paper


1 university of tehran

2 university of Tehran


Due to incorrect policies in the water resources sector and excessive withdrawal of groundwater resources, water quality in most plains of the country has decreased. Therefore, the quality of water for drinking and agriculture is important in qualitative terms.With this aim in this study, the desertification changes in Khash plain were studied using two criteria of groundwater and vegetation. Shooler and Wilcox diagrams were drawn up for AquaChem software for the years of 2001, 2008 and 2015. Also, spatial variations were made on Arctic plain surface using Arc GIS software and vegetation changes trend were also done using MOD13A2 sensor images and remote sensing techniques. The results showed that the number of wells that have an unpredictable TDS in the years 2008 and 2015 compared to 2001 have been increased by comparing the Schuler diagram. However, the level of lands with good drinking status decreased during the years 1387 and 1394 compared to 1380 and was increased by the level of acceptable drinking water. According to Wilcox's diagram, the result is that most wells are salty to very salty and their use is harmful to agriculture or requires measures. The results of the vegetation change trend also indicated that the trend is to reduce vegetation and the average level of the NDVI index decreases with the passage of time.


[1] Alizadeh, A., (2002). Principles of Applied Hydrology, Astan Qods Publication, 519p.
[2] Alipour, A., Rahimi, J., Azarnivand, A. (2017). Ground water quality assessment for drinking and agricultural purposes (A pre-requisite for land use planning in arid and semi-arid regions of Iran). Range and watershed management. 70(2): 423-434.
[3] Azareh, A., (2012). Investigating the indicators of water and land use in determining the severity of desertification in Garmsar Plain. MSc thesis, Natural resources faculty, University of Tehran.
[4] Edzwald, J. k., (2011). Water Quality and Treatment: A Handbook on Drinking Water, Sixth Edition. American Water Works Association, American Society of Civil Engineers, McGraw-Hill. 1696p.
[5] Hajrasoliha, Sh., 2003. Water quality for agriculture. Tehran University Press. 137p.
[6] Jahanshahi, A., Rohimoghaddam, E., Dehvari, A., (2014). Investigating groundwater quality parameters using GIS and Geostatistics (Case Study: Shahr-Babak Plain Aquifer), Water and soil science, 24 (2): 183-197.
[7] Karbasi, M., Esmaili, M., Taheri, M. and Bazargan, J. (2011). Study and the estimation of water requirement of crop and garden plants using different methods in order to provide appropriate cultivation pattern in irrigation and drainage network of Qara Darg Dam. 11th National Seminar on Irrigation and Evaporation Reduction, Kerman, Shahid Bahonar University.
[8] Moghaddam, A. R., Ghallehban Tekmedash, M. and Esmaili, K. (2013). Investigation of temporal and spatial trend of water quality parameters in view of weather fluctuations using GIS; Mashhad Plain. J. of Water and Soil Conservation, 20(3).
[9] Nath, V., and Helen, H. (2013). Evaluation of ground water quality in Neyyattinkara Taluk, Kerala. Journal of Chemical & Pharmaceutical Research, 5: 4-14.
[10] Pawar, S., Panaskard, B., and Wagh, M. (2014). Characterization of groundwater using water quality index of solapur industrial, (Case study: Maharashtra, India). International journal of Research in Engineering & Technology, 2(4): 31-36.
[11] Pourkhabaz, H. R., Aghdar, H., Mohammadyari, F. (2017). Zoning groundwater quality for agriculture by classification WILCOX index (Case study: Qazvin plain). Geographical Space. 17 (58). 111-129.
[12] Rahimi, M., Besharat, S., Verdinejad V. R., (2016). Evaluation of the groundwater resources quality of Ardabil aquifer for drinking and agricultural purposes. Journal of Environmental and Water Engineering, 2 (4): 360-375.
[13] Rafei Sharifabad, J., Nohegar, A., Zehtabian, Gh., Gholami, H., (2017). Study of temporal and spatial variations of groundwater quality for drinking and farming in Yazd-Ardakan plain. Desert management. 5(9): 107-119.
[14] Soleimani, F., Broomand, N., Azareh, A. (2017). Evaluating the Trend of Spatial and Temporal Changes in Groundwater Quality in Jiroft Plain. Journal of Range and Watershed Management .69 (4): 921-932.
[15] Sadeghi, S. H., Allbuali A., Ghazavi, R. (2016). Investigation of temporal and spatial Changes trends of Water Quality Parameters Using Geo Statistic Methods in Kashan Plain. Journal of Water and Soil Science. 20 (76): 73-83.
[16] Salajegheh, S., (2011). Investigation of groundwater quality changes trend using Geostatistic methods (Case study: Karaj city). MSc thesis, Natural resources faculty, University of Tehran.
Volume 71, Issue 2
September 2018
Pages 518-528
  • Receive Date: 31 January 2018
  • Revise Date: 25 August 2018
  • Accept Date: 05 March 2018
  • First Publish Date: 23 August 2018