Soil composition and radiation regulation
The authors give a definition of a soil radiation background and present its graphical expression as the maps of limiting values of soil radiation parameters. It is shown that the radiation background as a deterministic component of radioactivity results from natural radiation and, partly, from man-caused radiation both from natural and artificial radionuclides. Non-detenninistic component of soil radioactivity represents the contribution of man-caused radiation which is to be regulated.