This article explores the application of advanced geomatic techniques for detailed relief analysis to better understand soil erosion processes. The study utilizes Digital Elevation Models (DEMs) provided by ALOS PALSAR, which offer an adequate spatial resolution for geomorphological analysis. These data are processed and analyzed in the open-source software QGIS, enabling the generation of accurate information on the topographical features of the watershed. An important aspect of the research is slope analysis, a key factor in triggering water erosion. Slope distribution within the watershed is mapped and statistically analyzed to identify high-risk areas. The study also examines the degree of relief fragmentation, an important indicator of how water runoff and sediment transport are influenced by terrain morphology. Furthermore, the research includes the analysis of the Topographic Position Index (TPI), a valuable tool for classifying landforms and identifying areas prone to water accumulation or dispersion. This analysis contributes to a deeper understanding of the interaction between surface hydrological processes and terrain morphology, influencing susceptibility to erosion. The aim of the study is to demonstrate the usefulness of geomatic techniques in the accurate and detailed evaluation of relief characteristics, providing essential information for identifying critical areas at risk of erosion. The results can serve as a basis for informed decision-making regarding sustainable land management, the implementation of soil conservation measures, and territorial planning to reduce the negative impact of erosion.

Soil erosion, DEM, ALOS PALSAR, Topographic Position Index, QGIS

environmental engineering

Presentation: poster