Publication
Title
Factors controlling Si export from soils : a soil column approach
Author
Abstract
The release of dissolved silicon (DSi) from A and B horizons was investigated with leaching tests on unsaturated columns. As forest A horizons have larger biogenic Si (BSi) pools than arable lands, we compared the Si release from a forest and a cropland from the same geographical region developed on a Luvisol in Belgium and a Cambisol in Sweden. The A horizons released a quickly dissolving Si fraction in contrast to the B horizons, which did contain no or only little amounts of BSi and released lower Si concentrations. Our experiments show that Si export from forest soils is high because of the presence of a large reservoir of soluble BSi as well as due to the acidity of the soil (pH < 4). Leaching at two different water fluxes revealed that export in forest soils was transport controlled while cropland soils were in equilibrium.
Language
English
Source (journal)
Catena: an interdisciplinary journal of geomorphology, hydrology, pedology. - Giessen
Publication
Giessen : 2015
ISSN
0341-8162
Volume/pages
133(2015), p. 85-96
ISI
000359960600009
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 26.05.2015
Last edited 13.09.2017
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