Study of potentials economic valuation of mangrove ecosystem for coastal communities using satellite imagery (case study: East Coastal Surabaya)

East Coastal Surabaya is one of the places planted with mangrove ecosystems. Given the important role of mangroves in human life, it is necessary to manage a good mangrove ecosystem. Mangrove at East Coastal Surabaya is one of the conservation areas which is in a good condition. From the results of the study, it was found that the correlation between NDVI and Nitrate, Phosphorus, Potassium, pH, Salinity showed a strong correlation of value (R) of 0.99, 0.99, 0.98, 0.98, 0.99. This shows that if the NDVI value is high, so does the NPK parameters of nutrients, pH, salinity. From an economic side, the mangrove ecosystem is expected to increase the economy of the people in the coastal areas. The estimated value of the mangrove uses economic value. The value is obtained from the total value of direct benefits, indirect benefits and the benefits of the choice of mangrove ecosystems. From the results of this research, the estimated value of the total mangrove economy is 19,157,539,347/year. The details consist of the annual direct value of mangrove benefits of Rp. 192,865,000, annual indirect benefits of Rp. 18,820,605,707 and annual preferred benefit value of Rp. 144,068,640.