This research was conducted in January 2024 in the mangrove area of Apar Village, Pariaman City, West Sumatra Province. The aim of this research is to determine the condition of density and carbon stock and to determine the relationship between the diameter of mangrove trees of the Rhizophora mucronata, Sonneratia caseolaris and Sonneratia alba types with carbon stock mangrove. The method used …