Dynamic model of economic value of mangrove ecosystems Tangerang Coastal Area, Banten

Abstract

Aida GR, Wardiatno Y, Fahrudin A, Kamal MM. 2016. Dynamic model of economic value of mangrove ecosystems Tangerang Coastal Area, Banten. Bonorowo Wetlands 6: 26-42. The purpose of this research is to estimate mangrove productivity through the production of litter; estimate the potential fisheries production through mangrove litter production approach; estimate the mangrove ecosystem value from potential fisheries from mangrove litter production, existing fisheries and aquaculture; determining a dynamic model of mangrove ecosystems value for fisheries and the aquaculture in coastal areas of Tangerang District, Banten. The study was conducted in May-July 2014, with the location of sampling conducted in the Kronjo Subdistrict, Tangerang District, Banten. The data required include mangrove vegetation characteristics, physical and chemical parameters of the aquatic environment, mangrove litter production, socio-economic data related to the utilization of mangrove ecosystem and secondary data related. The potential fisheries that supported from mangrove calculated by the method which developed by Mahmudi (2008), the value of fisheries existing and aquaculture obtained through consumer surplus approach. Based on the research, production of mangrove litter which consisting of Avicennia marina, Avicennia alba, Rhizophora mucronata and Sonneratia caseolaris reaches 3.47 g/m2/day or 12 492 kg/ha/yr. Coastal fisheries potential of the ecosystem can support 1134.01 kg/ha/yr with the value reached Rp 27 016 978.57/ ha/yr. The value of actual fisheries reached Rp 5442896260/ha/yr and aquaculture Rp 8 012 608/ha/yr. The result of dynamic model simulation shows that in the existing condition, the total value of mangrove use are not sustainable and continued to decline. While mangrove rehabilitation at least 2.27 ha/yr can maintain the sustainable the value of mangrove uses. Mangrove rehabilitation also needs to consider the composition of mangrove species to produce fishery potential that can be supported optimally and increase the total value of mangrove utilization.