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Titre du document / Document title

Organic matter composition and degree of humification in lignite-rich mine soils under a chronosequence of pine

Auteur(s) / Author(s)

RUMPEL C. (1) ; KÖGEL-KNABNER I. (2) ; HÜTTL R. F. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Soil Protection and Recultivation, Brandenburg Technical University, P.O. Box 10 13 44, 03013 Cottbus, ALLEMAGNE
(2) Lehrstuhl für Bodenkunde, Technische Universität München, 85350 Freising-Weihenstephan, ALLEMAGNE

Résumé / Abstract

In the Lusatian mining district, in the eastern part of the Federal Republic of Germany, organic matter of reclaimed mine soils consists of a mixture of lignite and recently formed soil organic matter (recent carbon). The aim of the study was to investigate the recent carbon accumulation and the degree of humification of a chronosequence of young mine soils under forest. The lignite content of the forest floor, Ai (0-5 cm) and Cv horizons (1 m depth) was determined by 14C activity measurements and the structural composition of the organic matter was characterised by 13C CPMAS NMR spectroscopy. To obtain a characterisation of the degree of humification, the soil samples were analysed for the content of polysaccharides, proteins, lignin and lipids by wet chemical methods. 14 C activity measurements indicate that at the oldest site, comparable amounts of carbon accumulated in the first few centimetres of the soil profile than in natural forest soils. 13C CPMAS NMR spectra of the organic matter in the Ai horizons of the three soil profiles were dominated by aromatic and alkyl carbon species characteristic for lignite, but indicated as well an increasing contribution of carbon species from decomposing plant litter with soil age. When the results from wet chemical analyses were normalised to the total carbon content no changes with age could be noticed. After normalisation of the amount of litter compounds to the recent carbon content, the carbon identified by plant litter compound analysis decreased with increasing depth and increasing age of the soils. After 32 years the values are comparable to those of natural forest soils. These observations were confirmed by increasing degree of lignin alteration with stand age and soil depth. The data of wet chemical analyses complement data obtained by 14C activity measurements and 3C CPMAS NMR spectroscopy and lead to the conclusion that 32 years after reforestation the degree of humification of the soil organic matter is in the same range as those of natural sites.

Revue / Journal Title

Plant and soil    ISSN  0032-079X   CODEN PLSOA2 

Source / Source

Congrès
International symposium [Organic matter application and element turnover in disturbed terrestrial ecosystems], Cottbus , ALLEMAGNE (13/11/1997)
1999, vol. 213, no 1-2 (253 p.)  (26 ref.), [Notes: Selected symposium papers], pp. 161-168

Langue / Language

Anglais

Editeur / Publisher

Springer, Dordrecht, PAYS-BAS  (1949) (Revue)

Mots-clés anglais / English Keywords

Organic matter

;

Chemical composition

;

Humification

;

Mine soil

;

Vegetation dynamics

;

Ecological recovery

;

Pinus sylvestris

;

Pinus nigra

;

Lipids

;

Protein

;

Lignin

;

Germany

;

Coniferales

;

Gymnospermae

;

Spermatophyta

;

Europe

;

Softwood forest tree

;

Mots-clés français / French Keywords

Matière organique

;

Composition chimique

;

Humification

;

Terrain minier

;

Dynamique végétation

;

Restauration milieu

;

Pinus sylvestris

;

Pinus nigra

;

Lipide

;

Protéine

;

Lignine

;

Allemagne

;

Coniferales

;

Gymnospermae

;

Spermatophyta

;

Europe

;

Arbre forestier résineux

;

Mots-clés espagnols / Spanish Keywords

Materia orgánica

;

Composición química

;

Humificación

;

Terreno minero

;

Dinámica vegetación

;

Restauración ecológica

;

Pinus sylvestris

;

Pinus nigra

;

Lípido

;

Proteína

;

Lignina

;

Alemania

;

Coniferales

;

Gymnospermae

;

Spermatophyta

;

Europa

;

Arbol forestal resinoso

;

Localisation / Location

INIST-CNRS, Cote INIST : 4772, 35400008080393.0150

Nº notice refdoc (ud4) : 1268927



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