Stok Karbon Organik Sedimen di Kawasan Ekosistem Mangrove Pesisir Kabupaten Kolaka Sulawesi Tenggara: Organic Carbon Stock in the Mangrove Ecosystem Area of Kolaka Coastal Line Southeast Sulawesi

Mangrove ecosystem can absorb and store carbon stock in their biomass and sediment. This ecosystem plays an important role in the carbon cycle. This study aimed to analyze the C-organic content and organic carbon stock of sediment, also CO2 absorption. The sediment sampling was conducted in the Kolaka Coastal line mangroves using a Peat Auger for 1 m of sediment depth. Then the sediment was separated into four layers. Then the sediment samples were oven dried at 50°C for 1 week for sediment bulk density analysis (SBD). The analysis of the C-organic content of sediment was done by the LOI method. The estimation of sediment carbon stock using sediment C-organic data and SBD data. The results showed that the highest average of C-organic content was in station 3 (4.12±0.15%). In the othher hand, the highest average of SBD was in station 1 (0.67±0.02 g cm-3). Overall, the total of sediment C-organic stock in station 1 was higher than other station (233.67±11.90 Mg C ha-1). The total capacity of CO2 absorption by sediment in the station 1 was also higher than other station (856.77±37.66 Mg CO2 ha-1). The sediment C-organic stock was influenced by C-organic content and SBD value

ANALYSIS OF ECONOMIC GROWTH AND EXPORT DEVELOPMENT OF BANGKA BELITUNG ISLANDS

Economic growth is one indicator to measure that an area is prosperous and prosperous, while exports are one of the efforts to increase economic growth. Indonesia's economic growth in Quarter III-2021 grew by 3.51 percent when compared to Quarter III-2020 (y-on-y), and the development of Indonesia's export value in September 2021 reached US$ 20.60 billion, down 3.84 percent compared to exports in August 2021. With national conditions that will affect regional economic growth, the Bangka Belitung Islands Province's economic growth rate at the end of 2020 has decreased by negative 2.30% and the value of nomigas exports is negative 8.96%. By using a regression analysis tool, it is found that economic growth for the 12 quarters of the period 2018 to 2020 is positively correlated with export developments, which is 0.247 positive. The correlation value is in the low or weak category. Meanwhile, the effect of exports on economic growth is 0.061 or 6.1%. Efforts to increase economic growth can apply the theory of economic growth, implement strategies to increase exports, because there is a strength possessed by the Province of the Bangka Belitung Islands in the form of production factors. Keywords: Economic Growth and Export Development