Abstract:
Present study was aimed to assess and compare the soil organic carbon stock of
mangrove ecosystem and paddy agricultural land in Sathurukondan. This study was
carried out from July 2023 to December 2023. Soil samples were collected from both
study sites at 30cm depth form top layer and further divided into three subsamples for
the analysing purpose. Sampling locations also marked while sample collection. Soil
organic carbon content (%) was estimated by using Walkley and Black titration method
manually and soil organic carbon stock was calculated. One way ANOVA statistical
results revealed that there is a significance differences (P < 0.05) in the mean soil
organic carbon stock of mangrove ecosystem and paddy agricultural land. The mean
soil organic carbon stock of the mangrove ecosystem in Sathurukondan is 44.16 + 7 .56
tClhain 0 - 10 cm soil layer, 36.83 + 12.27 tClhain 10 -20 cm soil layer and 35.18 +
8.32tc/hain20 - 30 cm soil layer. The mean soil organic carbon stock of the paddy
agricultural land in Sathurukondan (near to mangrove ecosystem) is 22.24 + 8.1 8.tClha
in 0 - l0 cm soil layer, 19.96 + 6.15 tClha in l0 - 20 cm soil layer and21.29 + 4.57
tClha in 20 -30 cm soil layer. The soil organic maffers take major partin the organic
carbon stock of soil. Finding elucidated that higher soil organic carbon stock was
recorded in mangrove ecosystem, it is higher than all three layers of soil when compare
to respected layers of paddy agricultural lanrl soil. Mangrove ecosystem known as Blue
carbon ecosystem. They can absorb carbon from atmosphere and store it with their
biomass. Due to human activities mangrove ecosystem face threats and destruction of
mangroves are highly effect the soil organic carbon accumulation. In the paddy
agricultural land fertilizer usage, tillage, climate also change the soil organic carbon
accumulation. Appropriate methods of mitigating by raising awareness to save the
mangrove environment in order to preserve carbon sequestration is important.
