Humic substances distribution and transformation in forest soils

W. Zech; F. Ziegler; I. Kögel-Knabner; L. Haumaier

doi:10.1016/0048-9697(92)90084-6

Humic substances distribution and transformation in forest soils

W. Zech, F. Ziegler, I. Kögel-Knabner, L. Haumaier

Universität Bayreuth

Research output: Contribution to journal › Article › peer-review

104 Scopus citations

Abstract

The distribution and transformation of humic substances in forest soils is investigated by CPMAS ¹³C NMR spectroscopy and chemical analyses. Studies on bulk soil samples and humic acid fractions indicate that different forest humus types result from different rates but similar pathways of litter decomposition. The main features of humification in the investigated forest humus profiles are preferential mineralization of carbohydrates, strong alteration of lignin leading to increasing proportions of carbon-substituted aromatic rings and loss of phenolic groups, increase in carboxyl group contents and accumulation of refractory alkyl components. The action of earthworms promotes transformation of plant residues to humic substances and incorporation of organic matter into stable organo-mineral complexes.

Original language	English
Pages (from-to)	155-174
Number of pages	20
Journal	Science of the Total Environment
Volume	117-118
Issue number	C
DOIs	https://doi.org/10.1016/0048-9697(92)90084-6
State	Published - 30 May 1992
Externally published	Yes

Keywords

C NMR spectroscopy
forest soils
humic substances
organic matter

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10.1016/0048-9697(92)90084-6

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title = "Humic substances distribution and transformation in forest soils",

abstract = "The distribution and transformation of humic substances in forest soils is investigated by CPMAS 13C NMR spectroscopy and chemical analyses. Studies on bulk soil samples and humic acid fractions indicate that different forest humus types result from different rates but similar pathways of litter decomposition. The main features of humification in the investigated forest humus profiles are preferential mineralization of carbohydrates, strong alteration of lignin leading to increasing proportions of carbon-substituted aromatic rings and loss of phenolic groups, increase in carboxyl group contents and accumulation of refractory alkyl components. The action of earthworms promotes transformation of plant residues to humic substances and incorporation of organic matter into stable organo-mineral complexes.",

keywords = "C NMR spectroscopy, forest soils, humic substances, organic matter",

author = "W. Zech and F. Ziegler and I. K{\"o}gel-Knabner and L. Haumaier",

year = "1992",

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T1 - Humic substances distribution and transformation in forest soils

AU - Zech, W.

AU - Ziegler, F.

AU - Kögel-Knabner, I.

AU - Haumaier, L.

PY - 1992/5/30

Y1 - 1992/5/30

N2 - The distribution and transformation of humic substances in forest soils is investigated by CPMAS 13C NMR spectroscopy and chemical analyses. Studies on bulk soil samples and humic acid fractions indicate that different forest humus types result from different rates but similar pathways of litter decomposition. The main features of humification in the investigated forest humus profiles are preferential mineralization of carbohydrates, strong alteration of lignin leading to increasing proportions of carbon-substituted aromatic rings and loss of phenolic groups, increase in carboxyl group contents and accumulation of refractory alkyl components. The action of earthworms promotes transformation of plant residues to humic substances and incorporation of organic matter into stable organo-mineral complexes.

AB - The distribution and transformation of humic substances in forest soils is investigated by CPMAS 13C NMR spectroscopy and chemical analyses. Studies on bulk soil samples and humic acid fractions indicate that different forest humus types result from different rates but similar pathways of litter decomposition. The main features of humification in the investigated forest humus profiles are preferential mineralization of carbohydrates, strong alteration of lignin leading to increasing proportions of carbon-substituted aromatic rings and loss of phenolic groups, increase in carboxyl group contents and accumulation of refractory alkyl components. The action of earthworms promotes transformation of plant residues to humic substances and incorporation of organic matter into stable organo-mineral complexes.

KW - C NMR spectroscopy

KW - forest soils

KW - humic substances

KW - organic matter

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U2 - 10.1016/0048-9697(92)90084-6

DO - 10.1016/0048-9697(92)90084-6

M3 - Article

AN - SCOPUS:0026613376

SN - 0048-9697

VL - 117-118

SP - 155

EP - 174

JO - Science of the Total Environment

JF - Science of the Total Environment

IS - C

ER -

Humic substances distribution and transformation in forest soils

Abstract

Keywords

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