Pemetaan terumbu karang dengan citra satelit Sentinel-2 dan analisis kondisi karang di kawasan Pantai Pasir Putih, Situbondo Jawa Timur

Abstract

This research was conducted in Pasir Putih, Situbondo district, East Java with the aim of mapping coral reef ecosystems and analyzing the condition of coral diversity to support learning Geography in remote sensing courses. Coral reef maps were extracted from Sentinel-2 satellite imagery by applying a water column correction algorithm. Mapping of coral reef areas resulted in 3 categories, namely live coral with an area of 32,860 Ha, dead coral 31,690 Ha, and sand 42,670 Ha with a level of 72.2 percent which is included in the good category. Testing the accuracy of the extracted map using the confusion matrix method based on 90 field survey data. The accuracy of the resulting map met the accuracy standard specified in SNI No. 7716:2011 for Mapping of Habitats in Shallow Sea Waters. Furthermore, coral reefs were observed in 20 locations using the Line Intercept Transect (LIT) method. The results showed that 13 of the 20 transect areas were found to be in poor condition with less than 25 percent live coral cover. The most common types of coral life forms found at the study site were Coral Massive, Acropora Branching, and Acropora Tabulate. Coral life forms that are very rarely encountered are Acropora Submassive and Coral Mushroom. This research is very relevant in remote sensing courses for learning Geography.