| Using rainwater in catchments as the research target, the paper expatiate the concept and connotations of rainwater resources, presents the definitions and computations of theoretical potential, realistic potential and target potential in rainwater conversion into water resources; meanwhile, it lists ten types of target functions in accordance with the computation principles of the target potentials in rainwater conversion into water resources and on the basis of the analysis of the catchment types, and makes use of the goal programming to establish the models to compute the target potentials. |