Spatial modeling of geological formations based on water quality parameters in Parishan catchment

Document Type : پژوهشی

Authors

1 Faculty of Natural Resources, Department of Environment and Fisheries, University of Tehran

2 Ph.D. Student, Department of Geomorphology, faculty Literature and Humanities, Razi University, Kermanshah, Iran

3 Master student, Department of Environment, Faculty of Agriculture, Shiraz University, Shiraz, Iran

Abstract

Quality protection of surface and groundwater as one of the most valuable national resources is vital. For this purpose, Parishan basin was selected as a sample of semi-closed inland Zagros basins and geographical weight regression (GWR) modeling was performed using 25 observation wells of the relationship between water quality parameters and geological constructs. In this model, water quality parameters such as (EC, TDS, SAR, CL, Na, K, 4 SO) are used as dependent variables and geological formations are used as independent variables. The modeling results showed that the highest correlation based on qualitative parameters such as potassium, chlorine and electrical conductivity is related to the center and east of Parishan basin. Water quality is also effective. Then, by forming the Moran index autocorrelation, the relationship between water quality parameters and geological structures was evaluated. The model with high variability accuracy established a direct relationship between these two parameters and by doing this step, the model validation was confirmed. Finally, based on the prepared maps and the high power of the GWR model, managers and planners can use it to identify sensitive points of changing water resources for spatial modeling.

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References

Hosseinkhah, M. Erfanian, M., and Alijanpour, A. (2016). Modeling the effects of land use on water quality parameters using multivariate regression methods OLS and GWR in watersheds of Fars province, Journal of Environmental Studies, 42 (2), 353-373.
Pratt, B., & Changa, H. (2012). Effects of land cover, topography, and built structure on seasonal water quality at multiple spatial scales, Journal of Hazardous Materials, 209-210, 48-58.
Rezaei Tavabe, K., and Samadi Kouchaksarai, B., (2021). Investigation of salinity changes and electrical conductivity in the rehabilitation of Parishan wetland by water transfer from Nargesi dam, the first national conference on water quality management and the third national conference on water consumption management, Tehran. University of Tehran.

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History

  • Receive Date: 15 November 2021
  • Revise Date: 16 April 2022
  • Accept Date: 17 April 2022

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