Testing of Methodologies for Assessing Sediment Transport and Connectivity in Small Forested Watersheds.
| Název česky | Testování metod pro hodnocení transportu sedimentů a konektivity v malých zalesněných povodích |
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| Autoři | |
| Rok publikování | 2023 |
| Druh | Konferenční abstrakty |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | Higher production and intensive transport of sediments in the inhabited mountainous watersheds together with natural hazards increase the risk and the value of potential damage. In small forested basins, streams are usually unmeasured, and it is impossible to use remote sensing methods. Sediment transport assessment here is time demanding, costly, and usually requires professional expertise. In this work, we test a new methodology for sediment supply and transport assessment and a well established method the Effective Catchment Area (ECA) in two headwater catchments, Hučivá Desná and Upper Moravice in Hrubý Jeseník Mts. (Czech Republic). Based on technical documentation, freely available data sources, and field mapping we evaluated the basin's potential for sediment production, risk related to sediment transport, and lateral sediment connectivity. For Upper Moravice, the potential production of sediments and risk associated with sediment transport and deposition are low. In the case of Hučivá Desná, sediment productivity potential is lower medium, and risk is medium. Based on the used methodology, the river manager of Hučivá Desná stream should consider preparing a study of sediment transport in the future. The new methodology that we tested offers the possibility of an effective basic evaluation of the sediment transport regime and connectivity without measurements and extensive physical geographical knowledge. It could be a suitable support tool for river managers in the case of decision-making in the field of finance and project planning. |
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