Mitigation of Mangrove Loss in Pasuruan City Based on the High-Resolution Image Spectral Index Method

Abstract

This study aims to analyze the condition of mangroves in Pasuruan city, evaluate the suitability of mangrove land with spatial planning, and provide guidance for managing mangrove areas using spatial data. The methods used include the Mangrove Vegetation Index (MVI), overlay analysis between spatial plans and existing mangroves, and conservation strategies such as conservation, rehabilitation, and restoration. The results show that mangrove conditions from 2019 to 2023 have significantly declined. In 2023, the mangrove area decreased from 20.8 hectares to 15.3 hectares. Based on spatial planning, the areas deemed unsuitable are mostly located in the coastal ecosystem management zone, covering 24.8 hectares. As a result, rehabilitation should be prioritized, especially for areas that are severely damaged. The conservation zone is recommended to be at the end of Panggungrejo District, as this area still maintains relatively good mangrove conditions with optimal density. The originality of this study lies in the synthesis of MVI by combining high-resolution satellite imagery with spatial planning documents (RDTR and MTPP), creating a matrix-based conservation directive that classifies areas into zones for conservation, rehabilitation, and restoration.