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Titolo:
Temporal and vertical organic matter differentiation along a vegetation succession as revealed by pyrolysis and thermally assisted hydrolysis and methylation
Autore:
Nierop, KGJ;
Indirizzi:
Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Dept Phys Geog & Soil Sci,Fac Sci, NL-1018 WV Amsterdam, Netherlands Univ Amsterdam Amsterdam Netherlands NL-1018 WV V Amsterdam, Netherlands
Titolo Testata:
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
fascicolo: 1-2, volume: 61, anno: 2001,
pagine: 111 - 132
SICI:
0165-2370(200111)61:1-2<111:TAVOMD>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
TETRAMETHYLAMMONIUM HYDROXIDE TMAH; CHROMATOGRAPHY-MASS-SPECTROMETRY; CUO REACTION-PRODUCTS; PINUS-SYLVESTRIS; CHEMICAL-COMPOSITION; FUNGAL DEGRADATION; NMR-SPECTROSCOPY; GYMNOSPERM WOOD; PLANT-TISSUES; FOREST SOIL;
Keywords:
pyrolysis-gas chromatography/mass spectrometry; thermally assisted hydrolysis and methylation; (THM); tetramethylammonium hydroxide (TMAH); soil organic matter; lignin; cutin; suberin;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
58
Recensione:
Indirizzi per estratti:
Indirizzo: Nierop, KGJ Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Dept Phys Geog& Soil Sci,Fac Sci, Nieuwe Achtergracht 166, NL-1018 WV Amsterdam, Netherlands Univ Amsterdam Nieuwe Achtergracht 166 Amsterdam Netherlands NL-1018 WV
Citazione:
K.G.J. Nierop, "Temporal and vertical organic matter differentiation along a vegetation succession as revealed by pyrolysis and thermally assisted hydrolysis and methylation", J AN AP PYR, 61(1-2), 2001, pp. 111-132

Abstract

The origin and chemical nature of soil organic matter (SOM) in the ectorganic (L, F and H) horizons from four profiles from different stages of a primary vegetation succession on drift sand was studied to evaluate the impactof the vegetation on organic matter formation. In addition, the main sources of SOM, Le, needles, leaves and (fine) roots of the covering species were analysed. Using conventional pyrolysis, virtually no differences were found between profiles in the same pine forest but with (chemically) differentundergrowths. (Deschampsia flexuosa vs. Empetrum nigrum) that clearly delivered leaf and root litter to SOM. Thermally assisted hydrolysis and methylation (THM) of the same samples released compounds that were not detected by conventional pyrolysis without methylation. These compounds included methyl ethers and methyl esters of ((poly)hydroxy)alkanoic acids and were identified as building blocks of cutin and suberin. Both biopolymers appeared tobe better tracers of the various inputs of plant material than lignin, particularly in case of the most humified SOM. Although there was evidence of alteration of cutin and suberin compositions in the course of the succession in the beech forest, an inventory was still possible of above- and below ground litter as sources of SOM. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 19:57:13