Abstract-Mangrove forest in the context of climate change belongs to the LULUCF (land use, land use change and forestry) sector is one of the important sectors to be included in the inventory of greenhouse gas (GHG) emissions. Mangrove forest plays an important role in the carbon cycle. The present study analyzes the perspective of local wisdom of Jaring Halus Village communities on the existence of mangrove forest and to describe the land-use and land-cover changes between 2006 and 2012 of Jaring Halus Village, Langkat, North Sumatra, Indonesia and their implications to carbon dioxide emissions. The results showed that community knowledge on the general role of mangrove and coastal protection was 85.5% and 71.4%, respectively. Furthermore, 92.8% of the perspective of community was depicted that mangrove forests were greatly impacted to their lives, indicated that local wisdom contributed to maintaining the existence of mangrove forest in the village. A land-use change matrix demonstrated that there was very small increase from 2006 to 2012 in the land-use of secondary mangrove forest (0.0033 ha). The net cumulative of carbon emissions in Jaring Halus Village during 2006-2012 was -5.58 t CO2-eq/year, whereas predicting future emissions in 2016 was -16.74 t CO2-eq/year, suggesting carbon sequestration occurred in the mangrove forest. Mitigation actions were performed to increase carbon sequestration such as establishing nursery and planted after 3-6 months germinated, rehabilitation of degraded area, and unwritten rules concerning with the utility and cutting of mangrove trees with approval of village authority.