Based on the discussion about migratory principle of dissolved contaminants in rivers,a two-dimensional water quality model for pollutional zones in rivers is set up.

• 通过对河流中溶解态污染物的迁移运动规律的讨论，建立了河流污染带二维水质模型，经原体观测检验，模型计算值与观测值相当吻合。