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Shrimp-mangrove integrated farming system in the Mekong Delta, Vietnam.

Abstract
 The integrated shrimp-mangrove system is one of the most important farming systems in the Mekong Delta, especially in the buffer zone of Ca Mau province, Vietnam. According to Decision No. 116/1999/QD-TTg of the Vietnam Central Government, farms could use up to 40% of the total area of the buffer zone along the coast for aquaculture, with 60% reserved for mangrove plantation and environmental protection. Currently the mangrove-shrimp farming system in Ca Mau occupies a total area of 47,500 ha, of which ponds (ditches) cover about 19,000 ha. Shrimp culture is based mainly on improved extensive methods that give productivities in the range of 200-400 kg ha-1 yr-1. In addition to shrimps, several other species such as mud crab, fish, and blood cockle are also stocked to diversify aquaculture production and ensure regular incomes. With newly issued policies and regulations for shrimp-mangrove farming systems, new opportunities are being created for further improvement and development of the system.