Relationship analysis of vegetation structural properties and the aboveground carbon stock of mangrove forest

Abstract

Mangrove forests have important ecological functions as a controller of environmental quality in coastal areas and absorber of atmospheric carbon. The mangrove ecosystem has a unique vegetation structure which form vegetation zonation that consists of different forest stands characteristics and tree species. This study aims to analyze the relationship between vegetation structural properties and the estimated aboveground carbon (AGC) stock of mangrove forest in Bedul mangrove, Banyuwangi, East Java, Indonesia. The study was conducted by field observation at some purposively selected sample locations. Field measurement was aimed to collect data about mangrove tree diameter at breast height (DBH), species, tree height, and fractional canopy cover. Mangrove biomass was indirectly calculated by allometric method based on mangrove species to estimate AGC in mangrove stands. The highest total AGC found in this study was 114.09 tons/ha at Rhizophora mucronata dominated forest, while the lowest total AGC was 12.86 tons/ha with Ceriops tagal as the dominant species. The AGC estimation in mangrove stands correlated positively with DBH and tree height. However, the biomass content and AGC are affected by the number of mangrove stands. The difference in the number of stands affect the amount of carbon content at each sample point.

Biomass, carbon stock and sequestration in various conditions of mangrove forests in Sungai Apit, Siak, Riau, Indonesia

“…Biomass, carbon stock, and sequestration showed a high correlation (r = 0.935-0.962) with basal area and mean tree diameter. A previous study has shown that biomass and carbon stock of mangroves in Bedul, Banyuwangi, East Java were positively correlated with mean diameter, tree height, and density (Purnamasari et al 2020). Additionally, the greater biomass of some dominant mangrove trees in various locations has been attributed to their height (Duke et al 2013).…”

“…The species contributing the highest carbon sequestration are typically correlated with older tree age, which in turn, results in larger tree diameter. This tree diameter, in a positive correlation, leads to higher aboveground carbon stocks (Purnamasari et al 2020). Furthermore, there is a positive correlation between tree age and diameter, tree age and height, and tree age and biomass (Cabuy 2015).…”