Mapping the Changes in Mangrove Distribution from 2013 to 2022 in Langsa City Using Landsat 8 OLI Imagery
DOI:
https://doi.org/10.63639/bbt3bn56Keywords:
mangrove, change, distribution, forest, Landsat 8 OLIAbstract
Indonesia has the longest coastline and the largest mangrove area in the world, yet its mangrove ecosystems continue to degrade due to land conversion, illegal logging, and climate change. In Langsa City, Aceh, mangroves are distributed across three subdistricts and face serious threats despite rehabilitation efforts by the government and non-governmental organizations. Long-term monitoring of mangrove changes remains limited, even though it is essential for sustainable management. Therefore, this research aims to analyze the temporal changes in mangrove distribution in Langsa City from 2013 to 2022 using Landsat 8 OLI satellite imagery. This research was conducted in Langsa City, Aceh Province, to analyze mangrove distribution changes from 2013 to 2022 using Landsat 8 OLI imagery. Data collection involved satellite image analysis, field observations, and interviews with 30 purposively selected respondents across three districts. The research applied remote sensing techniques, including geometric and radiometric corrections, image classification, and ground truthing to ensure data accuracy and support sustainable mangrove management. The research found that mangrove coverage in Langsa City increased by 1,070.91 ha between 2013 and 2018 but declined by 685.49 ha from 2018 to 2022, due to both natural factors and human activities. Although restoration efforts, such as seedling planting, have been carried out, they remain insufficient to offset degradation. This highlights the need for enhanced monitoring, policy enforcement, and community engagement.
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