Analysis of the sensitivity of a model of terrestrial food chains

Abstract

This paper estimates, by means of a sensitivity analysis, the importance of the individual parameters of the model for terrestrial food chains. This method creates the basis for the calculation of the numerical values of the buildup factors of radionuclides in the chain deposited from the atmosphere-the content in food products. The ORB-11 model describes the transportation of radioactive substances through food chains. Several principal food products are considered: wheat, fruits, cucumbers, cabbage, potato, milk, and meat. The coefficient of sensitivity (CS) was computed for each input parameter, radionuclide, contamination route, and given change of input parameter by formula. The data obtained can be used for a stochastic approach to the mnDeling of the transportation of radioactive substances through the food chains, and to the planning of radioecological investigations.