| dc.description.abstract | Mangrove forests are generally found along the coast in the tidal zone and are
known to be the only woody halophytes. Mangrove forests are the most efficient
and productive carbon sinks. As a result of the increasing rate of deforestation and
degradation, mangroves produce substantial carbon emissions and contribute to
most greenhouse gas (GHG) emissions. The objectives of this study were to
determine the success rate of Rhizophora apiculata mangrove planting in October
to December 2022, analyze the structure and composition of natural and restoration
mangrove forests, and calculate the total carbon stock and carbon dioxide gas flux
in natural and restoration mangrove forests. The planting method was carried out
by inserting in the vacant part of the rehabilitation area, data collection of general
forest structure variations was carried out by means of a non-destructive census by
measuring the diameter, height, and species found as a whole, to calculate the value
of carbon stocks using the allometric equation with DBH> 5cm in natural forests
and restoration forests, CO2 gas flux data collection methods were measured using
the static closed chamber method. The percentage of success rate of planting carried
out is 67.5% of the total 200 seedlings planted. The species found in natural forests
are Rhizophora apiculata, Rhizophora stylosa, Scyphiphora hydrophyllacea, and
Sonneratia alba with a total of 134 individuals with tree levels found while in
restoration forests are Rhizophora apiculata, Rhizophora stylosa, Scyphiphora
hydrophyllacea, Sonneratia alba, Acacia leptocarpa, and Nypa fruticans with a total
of 130 individuals with tree levels found. The total carbon stock value found in the
natural forest was 10.75 mg/ha and the total carbon stock in the restoration forest
was 6.51 mg/ha. Total soil carbon stocks in natural and restoration forests were
2,345 MgC/ha. The largest value of dead wood carbon was found in transect 2,
which was 14.50 mg/ha in natural forest and 6.46 mg/ha in restoration forest. The
highest average CO2 flux during the dry season was found in the natural forest at
high tide of 1.000 mgCO2/m2/h and in the rainy season the highest average flux
was found in the natural forest at high tide of 959 mgCO2/m2/h. | en_US |
