Sebaran Hutan Mangrove di Wilayah Pesisir Tobelo menggunakan Sistem Informasi Geografis

The aim of this research is to make a map of mangrove forest distribution and to know the dynamics of mangrove forest distribution in the coastal area of Tobelo, North Halmahera Regency. The method used is descriptive quantitative and data analysis using Geographic Information Systems (GIS) with ArGis 10.6 software. The research data were processed from the base map and Landsat 7 imagery data for the period 2000-2020. The result of the analysis shows that there is a change in the distribution of the mangrove coastal mangrove Tobelo within 20 years. In the Landsat 7 level 1 image data, from 2000-2015 the mangrove forest experienced a lot of reduction, while in 2020 the mangrove forest on the Tobelo coast experienced an increase compared to previous years.