Folyómederben lévő holtfa mennyiségi felmérése drónfelvétel alapján
Quantifying large wood in river channels based on UAV imagery
Keywords:
large wood, river-morphology, sediment dynamics, UAV imagery, photogrammetry, /, holtfa, folyóalaktan, üledék dinamika, drón, fotogrammetriaAbstract
Large wood in river channels has received increasing attention in recent years, due to its importance in riverine ecosystems as well as in river morphology and sediment dynamics. Measuring large wood can be challenging, but with advances in remote sensing technologies, moreover in UAV imagery and photogrammetry precise measurements can be assessed. This study shows the results of a survey made for a ~3 km long channel reach of the Ohau river in New Zealand.
References
JACKSON, C. R., STURM, C.A., 2002: Woody debris and channel morphology in first‐and second‐order forested channels in Washington's coast ranges. Water Resources Research, 38/9, 16-1–16-14
Bilby, R. E., & Likens, G. E., 1980: Importance of organic debris dams in the structure and function of stream ecosystems. Ecology, 61/5, 1107-1113
Keller, E. A., & Swanson, F. J., 1979: Effects of large organic material [debris] on channel form and fluvial processes. Earth Surface Processes and Landforms, 4, 361-380
Turner, D., Lucieer, A., de Jong, S.M., 2015: Time series analysis of landslide dynamics using an unmanned aerial vehicle (UAV). Remote Sensing 7/2, 1736–1757
Sanhueza, D.; Picco, L.; Ruiz-Villanueva, V.; Iroumé, A.; Ulloa, H.; Barrientos, G., 2019: Quantification of fluvial wood using UAVs and structure from motion. Geomorphology, 345, 3-9