The relationship between the physical characteristics biomass estimation and soil organic matter at two mangrove zones

The mangroves which protect the coastal area from sea erosion and marine life breeding ground are suffering from rapid degradation due to human activity such as city development and farming. The main aims of this study are to assess the physical characteristics’ biomass by using allometric equation and the soil organic matter (SOM) between Avicennia marina and Rhizophora mucronata zones. Other than that, the aim is to correlate the effects of physical characteristics’ biomass by using allometric equation to the soil organic matter within A. marina and R. mucronata zones. This study showed that the tree diameter at breast height (DBH), height and physical characteristics’ biomass at A. marina zone was higher than R. mucronata zone (p < 0.001). Other than that, there was no difference in SOM between A. marina and R. mucronata zones (p = 0.185). The SOM has no effect on the tree physical characteristics’ biomass within both mangrove zones (A. marina zone, p = 0.414; R. mucronata zone, p = 0.859). In conclusion, physical characteristics’ biomass estimation does not affect the soil organic matter within both mangrove zones. Further studies can be conducted to inspect another aspect in nutrient cycles of mangroves such as mangrove trees age, leaf area index (LAI) and litterfall to see whether it can affect SOM.