In this study, which will cover six provinces in south Vietnam, we expect to find out the optimal level of mangrove coverage for shrimp farming systems, considering the benefits of mangrove on fishery. Besides, investigation of the determinants of the behavior of converting mangrove to other uses will provide useful information for policy makers towards a better management and conservation of mangrove forests. The project has the following research objectives: (1) Examine the impacts of mangrove on shrimp farming, specifically the impacts of mangrove coverage on shrimp farming productivity and profitability; (2) Examine the impacts of mangrove on the risk of shrimp farming; (3) Estimate the mangrove-fishery linkage; (4) Investigate the determinants of mangrove conversion.