The geomorphic impacts of culverts at paved forest roads: Examples from Carpathian headwater channels, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F17%3AA1801NDF" target="_blank" >RIV/61988987:17310/17:A1801NDF - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.catena.2017.06.007" target="_blank" >http://dx.doi.org/10.1016/j.catena.2017.06.007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.catena.2017.06.007" target="_blank" >10.1016/j.catena.2017.06.007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The geomorphic impacts of culverts at paved forest roads: Examples from Carpathian headwater channels, Czech Republic

Popis výsledku v původním jazyce

Road-stream crossings constructed with culverts have the potential to alter geomorphic processes in adjacent stream channels. We examined changes in channel geometry and bed sediments in longitudinal profiles related to culverts at five paved forest road crossings with perennial headwater streams and two gullies initiated by point releases of water through ditches. A dendrogeomorphic approach was used for dating of exposed tree roots and estimation of bank erosion rates in incised cross-sections downstream of road crossings. The studied forestroad crossings concentrate surface runoff from the road net, act as stabilizing elements in stream longitudinal profiles and decelerate bedload transport in the case of culvert clogging, which caused notable upstream and downstream changes in fluvial processes. Notable fining of the coarsest fraction in upstream cross-sections was observed only for two culverts with the highest depositional tendencies. Much lower width-depth ratios (&lt; 4) and typically higher channel slopes were measured in channel reaches downstream of the culverts, compared with upstream cross-sections.

Název v anglickém jazyce

The geomorphic impacts of culverts at paved forest roads: Examples from Carpathian headwater channels, Czech Republic

Popis výsledku anglicky

Road-stream crossings constructed with culverts have the potential to alter geomorphic processes in adjacent stream channels. We examined changes in channel geometry and bed sediments in longitudinal profiles related to culverts at five paved forest road crossings with perennial headwater streams and two gullies initiated by point releases of water through ditches. A dendrogeomorphic approach was used for dating of exposed tree roots and estimation of bank erosion rates in incised cross-sections downstream of road crossings. The studied forestroad crossings concentrate surface runoff from the road net, act as stabilizing elements in stream longitudinal profiles and decelerate bedload transport in the case of culvert clogging, which caused notable upstream and downstream changes in fluvial processes. Notable fining of the coarsest fraction in upstream cross-sections was observed only for two culverts with the highest depositional tendencies. Much lower width-depth ratios (&lt; 4) and typically higher channel slopes were measured in channel reaches downstream of the culverts, compared with upstream cross-sections.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

CATENA

ISSN

0341-8162

e-ISSN

—

Svazek periodika

157

Číslo periodika v rámci svazku

10/2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

424-435

Kód UT WoS článku

000406732200039

EID výsledku v databázi Scopus

2-s2.0-85020427780