Indragiri Hilir is a district in the southern part of Riau Province, on the east coast of Sumatra Island. Mangrove forest in this district continues to experience extensive depreciation. Tanjung Pasir village is one of the villages surrounded by mangrove forest ecosystems, located opposite Kuala Enok Village. The dominant of the population of Tanjung Pasir Village are ethnic Duano. Communities …