Article (Scientific journals)
Relative importance of factors controlling the leaching and uptake of inorganic ions in the canopy of a spruce forest
Hambuckers, Alain; Remacle, Jean
1993In Biogeochemistry, 23 (2), p. 99-117
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Abstract :
[en] Sequential sampling of precipitation under mature spruce trees and time-series analysis of the data were performed in order to assess, in natural conditions, the relative importance of different factors that could influence the leaching and uptake of inorganic ions in the canopy. Eleven rain events were analyzed in order to estimate how external factors, rain intensity, H+, and ionic concentration of the incident rain influence the ionic throughfall concentrations and the net throughfall fluxes. The results led to the conclusion that leaching or uptake mostly occur by diffusion. The influence of the open rain acidity was not conclusive; however, it was shown that the tested external factors only controlled a few percent of the variation of the data. By contrast, the autocorrelation of the data always explained a large portion of the variance. lt could result from the gradual changes in the course time of internal factors related to the exchange system including waxes, cuticles, apoplast and xylem sap. These constituents were known to control the exchange at the canopy surface and to be sensitive to the plant physiology and environmental conditions.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Hambuckers, Alain  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Taxonomie végétale et biologie de la conservation
Remacle, Jean ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Language :
English
Title :
Relative importance of factors controlling the leaching and uptake of inorganic ions in the canopy of a spruce forest
Publication date :
1993
Journal title :
Biogeochemistry
ISSN :
0168-2563
eISSN :
1573-515X
Publisher :
Springer Science & Business Media B.V., Dordrecht, Netherlands
Volume :
23
Issue :
2
Pages :
99-117
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 14 February 2010

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