Linking sediment connectivity with sediment transport risk assessment in small forested catchments in the Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00137703" target="_blank" >RIV/00216224:14310/24:00137703 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/rra.4295" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/rra.4295</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/rra.4295" target="_blank" >10.1002/rra.4295</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Linking sediment connectivity with sediment transport risk assessment in small forested catchments in the Czech Republic

Popis výsledku v původním jazyce

Steep mountain environments are typically characterized by high sediment production. In the case of high hillslope-channel connectivity, high production and intensive transport of sediments are problematic and can cause damage in inhabited areas. At the end of the 19th century, due to flood events, large-scale torrent control measures were inappropriately applied, disrupting the natural processes, and riparian and water ecosystems in watersheds. Connectivity in watersheds affects the course and magnitude of hazards that threaten human society. This is also why the topic of connectivity should be considered in the management of watercourses. Our study links the issue of sediment connectivity (lateral/longitudinal) and the sediment transport-related risk in unmeasured forested watersheds Hu &amp; ccaron;iv &amp; aacute; Desn &amp; aacute; and Upper Moravice. We applied a methodology for sediment transport-related risk assessment and the well-established effective catchment area (ECA) approach and connectivity index (IC) to two headwater streams. The results showed the parts of the streams with the highest degree of hazard related to sediment transport and sediment contribution areas connected to them. Based on the field survey, it was found that the best suitable threshold for ECA delineation for Hu &amp; ccaron;iv &amp; aacute; Desn &amp; aacute; catchments is 8 degrees and for Upper Moravice is 10 degrees. Area of sediment contribution areas for Hu &amp; ccaron;iv &amp; aacute; Desn &amp; aacute; is four times bigger than for Upper Moravice. The Hu &amp; ccaron;iva Desn &amp; aacute;, therefore, has a higher potential sediment supply from the slopes, which also increases the possibility of occurrence of hazards associated with the sediment transport regime. All three applied methods confirmed that the parallel roads along channels decrease slope-channel connectivity, especially in the Upper Moravice catchment. The combination of methodologies created a suitable tool to identify the most problematic stretches of streams in terms of sediment connectivity and risk related to sediment transport, which can be useful for water and sediment management in unmeasured forested watersheds.

Název v anglickém jazyce

Linking sediment connectivity with sediment transport risk assessment in small forested catchments in the Czech Republic

Popis výsledku anglicky

Steep mountain environments are typically characterized by high sediment production. In the case of high hillslope-channel connectivity, high production and intensive transport of sediments are problematic and can cause damage in inhabited areas. At the end of the 19th century, due to flood events, large-scale torrent control measures were inappropriately applied, disrupting the natural processes, and riparian and water ecosystems in watersheds. Connectivity in watersheds affects the course and magnitude of hazards that threaten human society. This is also why the topic of connectivity should be considered in the management of watercourses. Our study links the issue of sediment connectivity (lateral/longitudinal) and the sediment transport-related risk in unmeasured forested watersheds Hu &amp; ccaron;iv &amp; aacute; Desn &amp; aacute; and Upper Moravice. We applied a methodology for sediment transport-related risk assessment and the well-established effective catchment area (ECA) approach and connectivity index (IC) to two headwater streams. The results showed the parts of the streams with the highest degree of hazard related to sediment transport and sediment contribution areas connected to them. Based on the field survey, it was found that the best suitable threshold for ECA delineation for Hu &amp; ccaron;iv &amp; aacute; Desn &amp; aacute; catchments is 8 degrees and for Upper Moravice is 10 degrees. Area of sediment contribution areas for Hu &amp; ccaron;iv &amp; aacute; Desn &amp; aacute; is four times bigger than for Upper Moravice. The Hu &amp; ccaron;iva Desn &amp; aacute;, therefore, has a higher potential sediment supply from the slopes, which also increases the possibility of occurrence of hazards associated with the sediment transport regime. All three applied methods confirmed that the parallel roads along channels decrease slope-channel connectivity, especially in the Upper Moravice catchment. The combination of methodologies created a suitable tool to identify the most problematic stretches of streams in terms of sediment connectivity and risk related to sediment transport, which can be useful for water and sediment management in unmeasured forested watersheds.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

River Research and Applications

ISSN

1535-1459

e-ISSN

1535-1467

Svazek periodika

40

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

20

Strana od-do

1343-1362

Kód UT WoS článku

001228492100001

EID výsledku v databázi Scopus

2-s2.0-85193744353