Using the dye tracer for visualization of preferential flow in macro and micro-scale

0343077 - GLÚ 2011 US eng A - Abstract
Kodešová, R. - Němeček, K. - Kodeš, V. - Fér, M. - Jirků, V. - Nikodem, A. - Žigová, Anna - Jakšík, O. - Kočárek, M.
Using the dye tracer for visualization of preferential flow in macro and micro-scale.
Geophysical Research Abstracts. Roč. 12, - (2010). ISSN 1607-7962.
[European Geosciences Union General Assembly 2010. 02.05.2010-07.05.2010, Wienna]
R&D Projects: GA ČR GA526/08/0434
Institutional research plan: CEZ:AV0Z30130516
Keywords : dye tracer * preferential flow * micromorphology
Subject RIV: DF - Soil Science

Study was performed in the Haplic Luvisol in Hněvčeves and the Haplic Cambisol in Humpolec in the Czech Republic. The 100 (Haplic Luvisol) and 50 (Haplic Cambisol) litres of solute of dye Brilliant Blue FCF (5 g/litre) was infiltrated on a 1x1 m plot (applying an initial ponding depth of 10 and 5 cm, respectively) immediately after the wheat harvest. The 3-D image od the dye distribution was created. In addition, the thin soil section were made and micromorphological images were used to study a soil aggregate structure and dye disrtibution in microscale. Images of the Haplic Luvisol showed that while dye tracer was partly regularly transported and only some isolated domains were visible in the surface Ap1 horizon, the preferential flow occured in the subsurface horizons. Images of the Haplic Cambisol showed that dye tracer transport in the Haplic Cambisol was in all horizons (Ap, Bw, C) mainly affected by the preferential flow caused by the gravitational fractures and biopores.
Permanent Link: http://hdl.handle.net/11104/0185639