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      Analisis Kesehatan Mangrove Menggunakan Citra Sentinel-2A di Segara Anakan, Kabupaten Cilacap, Jawa Tengah.

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      Date
      2026
      Author
      Ramadhani, Ilma
      Arhatin, Risti Endriani
      Panjaitan, James Parlindungan
      Prayudha, Bayu
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      Abstract
      Segara Anakan merupakan kawasan laguna dengan hutan mangrove terluas di Pulau Jawa. Namun, kondisi kesehatan mangrove di kawasan ini mengalami penurunan yang berpotensi merusak ekosistem di sekitarnya. Penelitian ini bertujuan memetakan kondisi kesehatan mangrove secara multitemporal pada rentang tahun 2019 hingga 2025 dengan mengidentifikasi tingkat kehijauan dan kebasahan pada kanopi. Pemetaan ini menggunakan citra Sentinel-2A dengan algoritma Enhanced Mangrove Index (EMI) untuk mengisolasi area mangrove, serta Normalized Difference Vegetation Index (NDVI) dan Normalized Difference Water Index (NDWI) untuk mengidentifikasi kondisi kesehatannya. Hasil penelitian menunjukkan bahwa penerapan EMI dengan ambang batas 0,65 efektif membedakan vegetasi mangrove dari tumbuhan darat lainnya. Analisis NDVI dan NDWI memperlihatkan fluktuasi tingkat kehijauan serta kebasahan kanopi pada periode 2021 hingga 2024. Meskipun demikian, mangrove secara perlahan mengalami perubahan kondisi yang ditandai dengan kenaikan indeks kehijauan dan kebasahan pada tahun 2025. Keakuratan temuan divalidasi dengan korelasi regresi satelit terhadap data drone dengan nilai R2 sebesar 0,522 dan regresi hasil analisis kebasahan daun dengan data elevasi lahan sebagai salah satu indikator konektivitas pasut dengan nilai R2 sebesar 0,699.
       
      Segara Anakan is a lagoon area with the largest mangrove forest on Java Island. However, the health of the mangroves in this area has been declining, which has the potential to damage the surrounding ecosystem. This study aims to map the health of the mangroves over time from 2019 to 2025 by identifying the levels of greenness and wetness in the canopy. This mapping utilizes Sentinel-2A imagery with the Enhanced Mangrove Index (EMI) algorithm to isolate mangrove areas, as well as the Normalized Difference Vegetation Index (NDVI) and the Normalized Difference Water Index (NDWI) to assess their health. The results show that applying the EMI with a threshold of 0.65 effectively distinguishes mangrove vegetation from other terrestrial plants. Analysis of the NDVI and NDWI revealed fluctuations in canopy greenness and moisture levels from 2021 to 2024. However, the mangroves gradually underwent a change in condition, marked by an increase in greenness and moisture indices in 2025. The accuracy of the findings was validated through a satellite regression correlation with drone data, yielding an R² value of 0.522, and a regression of leaf wetness analysis results with land elevation data as an indicator of tidal connectivity yielding an R² value of 0.699.
       
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      http://repository.ipb.ac.id/handle/123456789/177175
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      • UF - Marine Science And Technology [2145]

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      Copyright © 2020 Library of IPB University
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      Indonesia DSpace Group 
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