Abstract:

For the complicated environmental effects of the objects of Regional Environmental Risk Assessment (RERA),the qualitative evaluations including expert advices are needed to identify the effects of risk,which inevitably involve uncertainties such as uncertainties and ignorance.Therefore,ERA problems need to be analyzed using methods that can handle uncertainties. In this paper,the Interval evidential reasoning (IER) approach was applied in RERA.Firstly,the IER approach was briefly explained.In a hypothetic case,the original multiple attribute assessment information was listed in belief structure through information transformation technique and the assessment information was aggregated with IER algorithm.Then,integrated the utility function in the RERA,the relative risk of every riskReceptor and riskResource were gained.It has been shown that IER approach made it possible to fuse the results of different methods, and each join of the method made the final result close to the truth. This study provided evidences for decisionmaking. 〖