The use of the GIS Kriging technique to determine the spatial changes of natural radionuclide concentrations in soil and forest cover

Background: the distribution of radionuclides occurring naturally in the earth depends on bedrock characteristics.therefore, the spatial distribution of radionuclides is not uniform. consequently, radionuclide information is vitallyimportant in determining and monitoring the spatial variation of the radionuclide concentrations that are over thelimits for the sustainable environment and human health.methods: this research was carried out using gis methods and geostatistical analysis as kriging techniques toreveal the spatial variation of the 226ra, 232th and 40 k concentrations of natural radionuclides in the coruh andaras basin. the spatial variations of the detected radionuclides were correlated with soil groups and forest cover.results: in the study area, 43.17% of the concentration of 40 k, 26.67% of the concentration of 226ra and 28.16%of the 232th concentration was determined to be over the average limits. concentrations of radionuclides that areover the average limits have been found to be on basalt and chestnut soils. brown and reddish brown soils have alow concentration of the spatial distribution of the radionuclides. statistically positive correlations were detected(0.865 **) between the 226ra and 232th. in addition, a positive relationship between forest cover and 226ra and anegative relationship between 232th and 40 k were identified.conclusions: excessive exposure to radiation may cause cancer and hereditary diseases. ecological environmentsinclude the soil and the plants. hence, the periodical monitoring of the spatial variation in concentrations ofradionuclides is very important for the health of future generations.