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(Article of periodic en Anglais - 2014)

Document title

Organic matter from biological soil crusts induces the initial formation of sandy temperate soils

Authors(s) and Affiliation(s)

DÜMIG A. (1) ; VESTE M. (2) ; HAGEDORN F. (3) ; FISCHER T. (4) ; LANGE P. (4) ; SPRÖTE R. (5) ; KÖGEL-KNABNER I. (1 6) ;
(1) Lehrstuhl für Bodenkunde, Dept. für ÖKologie und Ökosystemmanagement, Wissenchaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt, Technische Univ. München, Freising-Weihenstephan, ALLEMAGNE
(2) Centrum für Energietechnologie Brandenburg, Cottbus, ALLEMAGNE
(3) Dept. of Biogeochemistry, WSL, Swiss Federal Inst. of Forest, Snow and Landscape Research, Birmensdorf, SUISSE
(4) Brandenburg Univ. of Technology, Fac. of Environmental Sciences and Process Engineering, Central Analytical Lab., Cottbus, ALLEMAGNE
(5) Brandenburg Univ. of Technology, Chair of Soil Protection and Recultivation, Cottbus, ALLEMAGNE
(6) Inst. for Advanced Study, Technische Univ. München, Garching, ALLEMAGNE

Abstract

Different development stages of algae-dominated and moss-dominated biological soil crusts (BSCs) were sampled on a natural sand dune (< 17 years old) and on an experimental sand dune (< 8 years old) along a catena, including gradients of vegetation cover, location on the slope, as well as composition and thickness of BSC organisms in Brandenburg, northeastern Germany. The OC composition was characterized by solid-state 13C NMR spectroscopy and the carbohydrate-C signature. 14C contents were determined to assess the origin and dynamics of OC. From the radiocarbon contents, two OC pools were differentiated : recent BSC-derived and lignite-derived "old" OC. Downward movement of OC into the underlying substrate was found only under moss-dominated BSCs at the old sand dune. Because of the channeling effect of mosses, OC depth translocation along with suspended colloidal substances may contribute to OC accumulation in substrates

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2014, no122 [pp. 196-208]

Bibliographic references : 2 p.

Collation : 6 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.06.011

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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