Characterization of Potential Preferential Pathways in Soil Columns by X-ray Tomography and Infiltration Experiments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F07%3A00141680" target="_blank" >RIV/68407700:21110/07:00141680 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of Potential Preferential Pathways in Soil Columns by X-ray Tomography and Infiltration Experiments

Popis výsledku v původním jazyce

Disturbances of soil structure, which originate from both biological and physical processes in soil often represents pathways of the preferential flow. Larger structures can be well identified by X-ray computed tomography (CT) of the soil. In this studythe regions of high porosity were identified. Five undisturbed soil columns from Cambisol and Oxisol series from different locations have been studied. Data from CT were analyzed in connection with the flow dynamics as monitored on the same soil columnsby experiments in laboratory. Experiments consisted of series of infiltration events done using modified tension infiltration disc placed on the top of the soil column. Cumulative outflow and the total mass of the soil core were recorded as well as pressure heads measured by tensiometers. Experiments revealed occurrence of the preferential flow for the soil from Cambisol series.

Název v anglickém jazyce

Characterization of Potential Preferential Pathways in Soil Columns by X-ray Tomography and Infiltration Experiments

Popis výsledku anglicky

Disturbances of soil structure, which originate from both biological and physical processes in soil often represents pathways of the preferential flow. Larger structures can be well identified by X-ray computed tomography (CT) of the soil. In this studythe regions of high porosity were identified. Five undisturbed soil columns from Cambisol and Oxisol series from different locations have been studied. Data from CT were analyzed in connection with the flow dynamics as monitored on the same soil columnsby experiments in laboratory. Experiments consisted of series of infiltration events done using modified tension infiltration disc placed on the top of the soil column. Cumulative outflow and the total mass of the soil core were recorded as well as pressure heads measured by tensiometers. Experiments revealed occurrence of the preferential flow for the soil from Cambisol series.

Druh

O - Ostatní výsledky

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

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Projekt

<a href="/cs/project/1K05024" target="_blank" >1K05024: Vliv uzavřeného vzduchu na preferenční proudění a transport škodlivých látek v heterogenních půdách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2007

Kód důvěrnosti údajů

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