Monitoring of Post-Fire Bedload Transport Using Hydrophone in a Small Burnt Catchment, South Korea

Understanding the properties of wildfire-disrupted catchments is crucial for managing river floods and landslide risks. Using a hydrophone, we investigated changes in sediment supply conditions small mountainous (30.8 ha) southern Korea 6 years (March 2014–December 2019). Bedload transport rates mostly increased burned 1–2 post-wildfire (early post-fire regime) but decreased 3 owing to coverage slopes (late regime). Landslides triggered 5 bedload by approximately one order magnitude (post-landslide Although activity wildfire-disturbed after recovery ground-cover layer 1–3 post-fire, thy during events such as landslides. Furthermore, even undisturbed (139.7 ha), intense rainstorm (≥100.0 mm), with this change lasting 2 years. Our observations showed that forest restoration wildfire should be planned implemented from min- long-term perspective. In addition, rainstorms, relationship between flow large variability catchments. surrogate monitoring using hydrophone was useful understanding characteristics according various catchment.