How to design a cost-effective policy of wetland selection for water quality preservation in agricultural landscape?

Abstract : Wetlands are the interface between land and water – simultaneously providing benefits and imposing costs on local communities. On the one hand, water percolates through wetlands, providing a cleaning process beneficial to society. This cleaning process is particularly important in agricultural landscape where pollution from pesticides or nutrients are widespread. Yet, on the other hand, wetlands are costly for agricultural production since they are unproductive land.