Mapping the Suitability of Milkfish Ponds in Sidoarjo District Using Geographic Information Systems (GIS)

Abstract

Milkfish is one of the potential fishery products in Sidoarjo Regency. Sidoarjo District, one of the subdistricts in Sidoarjo Regency, has significant potential for milkfish development due to its 3271.96 ha of land area. Pond suitability analysis is a crucial aspect of supporting the success of milkfish cultivation. Land suitability can be analyzed using Geographic Information Systems (GIS). This research involved two phases: data collection and analysis. The data parameters collected are temperature, pH, DO, phosphate, and salinity. The data analysis employed overlay and scoring methods. The final scoring results were categorized into four classes, including classes S1 (Very Suitable), S2 (Quite Suitable), S3 (Conditionally Suitable), and N (Not Appropriate). Based on analysis of Landsat image data, the pond area in Sidoarjo District reached 2991.03 Ha. The final scoring results showed that the pond area in the S1 category was 1,816.53 Ha (60.73%), then the S2 category was 1174.50 ha (39.29%). Referring to the calculation of the percentage of pond suitability, most of the ponds in Sidoarjo District are very suitable for cultivating milkfish.