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(Article of periodic en Anglais - 2013)

Document title

FT-IR spectroscopy reveals that ash water repellency is highly dependent on ash chemical composition

published at : Soil water repellency

Authors(s) and Affiliation(s)

DLAPA P. (1) ; BODÍ M.B. (2) ; MATAIX-SOLERA J. (3) ; CERDÀ A. (2) ; DOERR S.H. (4) ;
(1) Dep. of Soil Science, Fac. of natural Science, Comenius Univ., Bratislava, SLOVAQUIE
(2) SEDER (Soil Erosion and Degradation Research Group), Dept. de Geografia, Univ., València, ESPAGNE
(3) GEA-Grupo de Edafología Ambiental, Dep. de Agroquímica y Medio Ambiente, Univ. Miguel Hernández, Alicante, ESPAGNE
(4) Dept. of Geography, College of Science, Univ., Swansea, ROYAUME-UNI

Abstract

Ten ash samples with different wettability were each taken from 4 burned Mediterranean forest sites located at Albaida (A), Llíber (L), Navalón (N), and Pinoso (P), in the east of Spain. The persistence of water repellency of samples was assessed by the Water Drop Penetration Time (WDPT) test and Fourier Transform-Infrared (FT-IR) analysis was applied to characterise sample chemical composition. Ash water repellency varied from wettable to severely water repellent and differed in terms of maximum WDPT and number of water repellent samples within the four locations. In all FT-IR spectra obtained, the absorbance bands assigned to organic matter and carbonates were dominant. Organic matter content in all water repellent ash samples was more than twice the carbonate content. From the results obtained it is concluded that the water repellency or wettability of wildfire ash is driven by the ratio of remaining organic matter to emerging carbonates, which in turn, is related to fire severity

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 108 [pp. 35-43]

Bibliographic references : 1 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.02.011

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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