Economic valuation and lost value of mangroves ecosystem due to oil spill in Peleng Strait, Banggai and Banggai Islands Regency Central Sulawesi

The increase of sea transportation in the Strait Peleng, Banggai and Banggai Islands Regency, Central Sulawesi such as tankers are potentially causing environmental degradation, which in case of a tanker collision that may cause an oil spill. The event of oil spills in the marine environment when entry into the mangrove ecosystem can cause damage to mangrove ecosystems. The research aims to determine how much the loss value of mangrove ecosystem when the oil spill contaminates into the mangrove ecosystem, so it is necessary to do an economic assessment for the damage of mangrove ecosystems. Furthermore, some data is needed, there :is important value index of mangrove, economic valuation of mangrove ecosystems, oil distribution patterns and the loos value of mangrove that caused by the oil spill. The research was conducted in nine districts in the Peleng Strait of Banggai and Banggai Islands, among others: South Batui, Batui, East Luwuk, Lamala, Masama, Balantak, Bualemo (located in the administrative area of Banggai) and the District Bulagi and Buko (located in the administrative area Banggai Islands). This research was conducted from August to November 2016 for taking the sample and interviews to the community and local government. Based on the results that showed, the mangrove ecosystem in Peleng Strait Coastal Water has a total area of ± 107 ha with a total value of economic value is US$ 1,702,605.73/year. The biggest contributor comes from indirect value, that is as a buffer abrasion or as break water of US$ 1,237,277.78/year. Base total economic value, the biggest effect of the oil spill could be losses per year is US$ 695,521.97/year that occurred in the second transitional season (July – September).