Advanced

Factors controlling Si export from soils: A soil column approach

Ronchi, Benedicta; Barao, Lucia; Clymans, Wim LU ; Vandevenne, Floor; Batelaan, Okke; Govers, Gerard; Struyf, Eric and Dassargues, Alain (2015) In Catena 133. p.85-96
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... (More)
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. (C) 2015 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Land use, Flux, Reactivity, Pedogenic Si, Biogenic Si
in
Catena
volume
133
pages
85 - 96
publisher
Elsevier
external identifiers
  • wos:000359960600009
  • scopus:84929448880
ISSN
0341-8162
DOI
10.1016/j.catena.2015.05.007
language
English
LU publication?
yes
id
e32ec53e-f08e-4df7-b7d6-c718feb20fb7 (old id 7969244)
date added to LUP
2015-09-23 07:58:43
date last changed
2017-07-23 04:00:41
@article{e32ec53e-f08e-4df7-b7d6-c718feb20fb7,
  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&lt;4). Leaching at two different water fluxes revealed that export in forest soils was transport controlled while cropland soils were in equilibrium. (C) 2015 Elsevier B.V. All rights reserved.},
  author       = {Ronchi, Benedicta and Barao, Lucia and Clymans, Wim and Vandevenne, Floor and Batelaan, Okke and Govers, Gerard and Struyf, Eric and Dassargues, Alain},
  issn         = {0341-8162},
  keyword      = {Land use,Flux,Reactivity,Pedogenic Si,Biogenic Si},
  language     = {eng},
  pages        = {85--96},
  publisher    = {Elsevier},
  series       = {Catena},
  title        = {Factors controlling Si export from soils: A soil column approach},
  url          = {http://dx.doi.org/10.1016/j.catena.2015.05.007},
  volume       = {133},
  year         = {2015},
}