Mapping Potential Saltern Areas Using Remote Sensing and Geospatial Analysis of Physical and Climatic Parameters for Sustainable and Innovative Salt Production
Rodel T. Utrera(1*), Nathaniel R. Alibuyog(2), Julius Jonar L. Butay(3), Joemel G. Agreda(4), Nadine Sharinette R. Bravo(1), Lord Ian R. Galano(1)

1) Research Directorate, Mariano Marcos State University
*rtutrera[at]mmsu.edu.ph
2) College of Engineering, Mariano Marcos State University
3) Planning Directorate, Mariano Marcos State University
4) College of Computing and Information Sciences, Mariano
Marcos State University

Abstract

This study maps potential saltern sites in Region 1, Philippines, by integrating remote sensing and geospatial technologies to identify optimal locations for sustainable and innovative salt production. A Geographic Information System (GIS)-based approach was employed, utilizing remotely sensed data-such as land cover, digital elevation models (DEMs), and satellite-derived environmental variables-to assess site suitability based on physical and environmental parameters. Key physical factors analyzed included land cover classification, topography, slope, soil type, and proximity to coastal and inland water sources. Climatic parameters such as rainfall, temperature, wind speed, and relative humidity were also examined to determine ideal conditions for natural salt crystallization and evaporation.
Remote sensing significantly enhanced the spatial analysis process, allowing for the efficient development of high-resolution suitability maps. For validation, the study employed both field observations and high-resolution drone imagery to verify the accuracy of the mapped outputs. Drone-based aerial surveys provided up-to-date, site-specific visual data that supported ground truthing and improved the spatial resolution and reliability of the validation process.
The results identified priority areas that meet the environmental and logistical requirements for saltern development. This integrated methodology offers a scalable framework for local governments and stakeholders, facilitating data-driven decision-making in support of artisanal salt production and regional development. The study underscores the value of combining satellite remote sensing, GIS, and drone-based validation to enhance spatial planning and contribute to the sustainable growth of the salt industry.

Keywords: Remote sensing, Geospatial analysis, Saltern site suitability, Digital elevation model, Sustainable salt production, Region 1 Philippines, GIS, Climatological parameters

Topic: Topic D: Geospatial Data Integration