A fuzzy multi-objective programming approach for optimal management of the reservoir watershed

This paper applies a fuzzy multi-objective programming model for the evaluation of sustainable management strategies of optimal land development in the reservoir watershed. The environmental goals lie in the conservation of reservoir water quality and the economic goals focus on the rewards from various uses of land within the watershed. Carrying capacity of the land and assimilative capacity of the reservoir are two major limitations encountered in systems analysis. In particular, it demonstrates how imprecise information in such a system can be quantified by specific membership functions in a fuzzy multi-objective analytical framework. It shows that the fuzzy outputs associated with different weight distributions in decision analysis can successfully reflect system complexity and generate more realistic management policies. A case study of the planning for land use programs in the Tweng-Wen reservoir watershed in Taiwan was demonstrated.