드론 영상을 활용한 섬진강 수달서식지 내 미지형 유형 변화 연구

Abstract

This study analyzed changes in micro-landform types within the Seomjin River otter habitat over four time periods—the dry and wet seasons of 2019 and 2024—using drone orthophotography. The results showed that the floodplain-bare land-natural and water body-main channel-small channel types accounted for the majority of the total area in all four periods. During the dry season, the main channel and sandbar-type bars expanded, while during the wet season, the main channel expanded and the point bars contracted. Change detection revealed active transitions between main channel-bare land-sandbar types. This confirmed the presence of a channel characteristic whereby sedimentation occurs during the dry season and both erosion and sedimentation occur simultaneously during the wet season. The seasonal changes in riverbed microlandform types in the Seomjin River otter habitat potentially exert dual impacts on the otter habitat environment. This study provided a multi-layered analysis of riverbed micro-landform changes in the Seomjin River otter habitat by combining drone imagery with a detailed, broad classification system. The study is expected to provide foundational data for establishing habitat management and conservation strategies for endangered species such as otters.