Spatial Variability in the Electro Conductivity of Soil and Groundwater in the Balaroud Area Located in the Southwest of Iran.
Farzad Nazarizadeh, Khuzestan Water and Power Authority, Golestan Street, Ahwaz, Iran
This paper focuses on the special variability in the Electro Conductivity (EC) of soil and groundwater resources using the geostatistic method and determining the effective variables, which are determinential in the area under study. Its groundwater inflow is from the northern part of the Khuzestan plain and its outflow is through the southern part of the plain. The EC of the soil with a variance of 0.414 – 3.33 and an average of 0.9938 mmµ/cm and the groundwater with a variance of 270 – 4799 and an average 1082.64 mmµ/cm was obtained in the final analysis. The review of the variograms was carried out using the geostatistic method and it was found that the variance for the soil and groundwater EC was respectively 93300 and 61700 meters. The soil EC map showed an area with high EC content approximately in the western end of the region which is near the region were traditional farming takes place. The underlying reason for such a phenomena can be attributed to farm management techniques. The groundwater EC map showed an area with a high EC in the southern part of region near the city of Andimeshk. It was assumed that this phenomenon is the result of the gradual development of the groundwater flow, increase in groundwater abstraction in this region and the entering of urban and industrial wastewater pollutants into groundwater resources. Current agricultural practices are also another cause. It has been suggested that in a region were there is no or relatively little EC, there is a suitable amount of permeability and transfer, thus in order to optimize the regimen of groundwater source, artificial feeding should be initiated.