Analysis of Mangrove Vegetation Density Based on SPOT-7-Based Normalized Difference Vegetation Index (NDVI) in Simeulue Regency. YKPJ [Internet]. 2026 Jan. 2 [cited 2026 Feb. 11];1(3):145-51. Available from: https://ykpjournal.org/index.php/ykpjournal/article/view/115