摘要：The blind number theory was applied to define the blind numbers of the parameters of environmental system according to the characteristics of several kinds of uncertainties coexisting in water environmental system. Entropy coefficient method was calculate indicator weight based on the differences of water evaluation indicators and effectively solve the problems of weight calculation and effect of subjective factor. On this basis, A new model for water quality evaluation that is representative of overall water quality of river stretch was established based on water quality comprehensive index evaluation model. The results of simulation case study showed that comparing with the deterministic model is feasible and reliable.
