Geospatial Modeling to Assess The Land Suitability of Mangrove Restoration at Bantul Regency, Yogyakarta, Indonesia

Abstract

The geo-position of Bantul Regency, which has open seas directly facing the Indian Ocean, is very vulnerable to tsunami and abrasion hazards, therefore disaster mitigation is needed in the form of restoring mangrove forest ecosystems. The purpose of this study was to assess the land suitability of mangrove restoration. The method used in this research is geospatial modelling that utilizes field surveys and interviews. The parameters tested consisted of maximum inundation, inundation frequency and land use. The results showed the potential for mangrove restoration as disaster mitigation at the Opak river estuary in Tirtohargo Village Kretek District and Rejosari Village in Sanden District. The Progo River estuary is also a mangrove restoration area in Poncosari Village, Srandakan District. After doing the geospatial analysis, it was found that the potential for mangrove forest restoration with a very suitable class was 168 ha and a suitable class was 181 ha. This mangrove forest is highly recommended because it physically has a coastal defence, protecting beaches and river banks, and prevents seawater abrasion.