Ecosystems Mangrove forests grow in tidal areas, especially on sheltered beaches, lagoons and riveer estuaries. Mangrove forests are also known as tidal forests, coastal woodland, vloedbosschen and brackish forest. This ecosystem plays an important role ecologically, socially and economically on small islands and coastal areas in Indonesia primarily as a producer of blue carbon to support the target of NDC in Indonesia. Maluku, consisting of 1340 small islands with narrow and short watershed characteristics in 12 island clusters, is particularly vulnerable to climate change. The purpose of this research is to analyze the potential of mangrove ecosystems and their distribution, the level of damage / threat and the contribution of mangrove ecosystems to island-based development to support Indonesia’s NDC contribution. The method used the Geo Information System, and compared it to Landset Image Analysis and Googlemap, which is supported by other research results. The results showed a total area of ​​Mangrove Ecosystems of 227,151,41 Ha; primary mangroves (MP) 85,983, 61 Ha (31,02%) and secondary Mangroves 141.167,80 Ha (68.02). This area is distributed over 11 island clusters with different areas; only island group 11 has no mangroves. Mo