This report takes assesses California’s agricultural resources and identifies four factors threatening the future of agriculture— urban growth, salinity, soil erosion and water supply. The report describes the types of agricultural land affected by each factor, considers the combined effect of these issues, and looks at the extent to which productive farmland in one location can be replaced by land brought into production elsewhere. The report then makes the case for action and offers a menu of policy options to protect the state’s agricultural land.