A dynamic foodchain model and program for predicting the radiological consequences of nuclear accident has been developed.They are not only suitable to the west foodchain but also to the chinese food chain.The following processes which will make an impact on radionuclide concentration in the edible parts of vegetable caused by accident release are considered:dry and wet deposition interception and initial retention,translocation,percolation,root uptake and tillage.Intake rate of animal,effects of processi...