Analysis of the utilization of landsat 8 oli imagery for mapping the distribution of coral reefs in Pulau Weh Sabang

M Taufik Rahmadi,Ayu Suciani,Sugiharto Sugiharto,Mbina Pinem

doi:10.13170/depik.10.2.20966

Abstract

As one of the largest archipelagic countries globally, Indonesia has diverse natural resources, one of which is the coral reef ecosystem. Coral reef ecosystems are spread across almost all Indonesian waters, and Pulau Weh Sabang is one distribution area. This study aims to determine the distribution of coral reef ecosystems and test landsat 8 oli imagery accuracy in mapping coral reef ecosystems. The method used in this research is the nearest neighbour algorithm object-based classification method. The results showed that the coral reef ecosystem in Pulau Weh Sabang was divided into two classes: a healthy coral reef ecosystem class with 277.38 hectares and a medium condition coral reef ecosystem class with an area of 710.01 Ha.Keywords:Landsat 8 oliMappingDistributionCoral reefWeh Island

Highlights

Indonesia is one of the countries that have abundant natural resources
This study aims to map the distribution of coral reef ecosystems on Weh Sabang Island and test the accuracy of LANDSAT 8 OLI (Operational Land Imager) imagery in mapping the distribution of coral reefs
Mapping of coral reef ecosystem distribution is obtained based on the nearest neighbour algorithm object-based classification

Summary

Introduction

Indonesia is one of the countries that have abundant natural resources. As one of the largest archipelagic countries and significant natural resources, the Indonesian archipelago has various marine ecosystems, both those that live in shallow seas and those that live in the deep sea. Dahuri (2003) suggests that coastal ecosystems' characteristics can be classified into artificial ecosystems and natural ecosystems. One of the natural ecosystems located in the coastal zone is the coral reef ecosystem. Koroy (2020) argues that coral reefs have distributed throughout Indonesia's territorial waters with varying conditions, both in type and quantity. According to Tangke (2010), coastal ecosystems generally consist of three components: sea, coral reefs, and mangroves

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