Impact of varying micromorphology on water flow and solute transport

0087450 - GLÚ 2008 DE eng A - Abstract
Kodešová, R. - Kočárek, M. - Kodeš, V. - Kozák, J. - Žigová, Anna
Impact of varying micromorphology on water flow and solute transport.
Geophysical Research Abstracts. Roč. 9, - (2007), A-03477-A-03477. ISSN 1607-7962.
[European Geosciences Union General Assembly /4./. 15.04.2007-20.04.2007, Vienna]
Institutional research plan: CEZ:AV0Z30130516
Keywords : soil micromorphology * soil types * water flow
Subject RIV: DF - Soil Science
http://www.cosis.net/abstracts/EGU2007/03477/EGU2007-J-03477-1.pdf

The impact of varying soil micromorphology on soil hydraulic properties and consequently on water flow and herbicide transport is demonstrated on three soil types. The micromorphological image of humic horizon of Haplic Luvisol shows higher order aggregates. The micromorphological image of humic horizont of Greyic Phaeozem shows the relatively homogeneous matrix structure with many pores less than 100 micrometers and a system of larger pores. Aggregates in humic horizont of Haplic Cambisol are purely developed. The soil water properties reflect the pore-size distribution studied using the image analysis. The chlorotoluron mobility in the monitored soils increases as a follows: Haplic Luvisol< Haplic Cambisol< Greyic Phaeozem. Preferential flow slightly affected the herbicide transport. Large gravitational pores that may transport water under saturated conditions were not active during the monitored period.
Permanent Link: http://hdl.handle.net/11104/0149290