Abstract
In this paper a multisubregional nonlinear dynamical waterenvironment-economy input-output model is developed which is based on the balance between production and use of outputs and the two-level scheme for treatment of water pollution. The model is combined with the water quality model of a river system in the regional area and a multisubregional waterenvironment-economy planning problem is established. In order to solve the large scale problem, a multiobjective hierarchical optimization algorithm is proposed. Theoretical analysis and computer simulation show that more factors are considered in the models and the calculations for optimization of planning are improved effectively by means of a hierarchical structure. So the method in the paper provides a useful tool for a regional waterenvironment-economy planning.
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