Research regarding economicvaluation of mangrove forest in Taman Ayu Village, West Lombok Regency has been conducted. The purposes of this research were to calculate and analyze economic value of benefit from mangrove foresteco system. Collecting data was conducted through observations and interviews. Results of direct benefit economic value wereobtained fromdirect exploitation by local comunity. Direct value benefit of mangrove forest were Rp. 227.040.000/year. Indirect value benefit obtained frome cosystem service of mangrove forest with a value Rp.1.405.041.200/year. Existence value benefit was obtained by using method of CVM (Contingent Valuation Method)with a value Rp. 1.520.000/year. Option value benefit was obtained from biodiversity value with a valuewere Rp.1.200.000/year. Total Economic Value (TEV) of forest mangrove in Taman Ayu Village were Rp. 1.634.801.200/year.

Research regarding economic valuation of mangrove in Gerung District, West Lombok Regency has been conducted. The purposes of this research were to calculate and analyze economic value from mangrove ecosystem at Gerung District. Research methods used observation and interviews. Direct Economic Value (DEV) were obtained from direct use of mangrove with a value IDR. 227,040,000/year. Indirect Economic Value (IEV)were calculated from mangrove ecosystem services with a value IDR. 1,405,041,200/year, Existence Value (EV) was obtained by Contingent Valuation Method (CVM) with a value IDR. 1,520,000/year. Option Value (OV) were calculated from biodiversity value with a value were IDR. 1,200,000/year. Total Economic Value (TEV) of mangrove in Gerung District were IDR. 1,634,801,200/year.