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Chemistry of soil organic matter as related to C : N in Norway spruce forest (Picea abies (L.) Karst.) floors and mineral soils

Title data

Dignac, Marie-France ; Kögel-Knabner, Ingrid ; Michel, Kerstin ; Matzner, Egbert ; Knicker, Heike:
Chemistry of soil organic matter as related to C : N in Norway spruce forest (Picea abies (L.) Karst.) floors and mineral soils.
In: Journal of Plant Nutrition and Soil Science. Vol. 165 (2002) Issue 3 . - pp. 281-289.
ISSN 1436-8730
DOI: https://doi.org/10.1002/1522-2624(200206)165:3<281::AID-JPLN281>3.0.CO;2-A

Abstract in another language

Due to high nitrogen deposition in central Europe, the C : N ratio of litter and the forest floor has narrowed in the past. This may cause changes in the chemical composition of the soil organic matter. Here we investigate the composition of organic matter in Oh and A horizons of 15 Norway spruce soils with a wide range of C : N ratios. Samples are analyzed with solid-state 13C nuclear magnetic resonance (NMR) spectroscopy, along with chemolytic analyses of lignin, polysaccharides, and amino acid-N. The data are investigated for functional relationships between C, N contents and C : N ratios by structural analysis. With increasing N content, the concentration of lignin decreases in the Oh horizons, but increases in the A horizons. A negative effect of N on lignin degradation is observed in the mineral soil, but not in the humus layer. In the A horizons non-phenolic aromatic C compounds accumulate, especially at low N values. At high N levels, N is preferentially incorporated into the amino acid fraction and only to a smaller extent into the non-hydrolyzable N fraction. High total N concentrations are associated with a higher relative contribution of organic matter of microbial origin.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER9533
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Chair Soil Ecology - Univ.-Prof. Dr. Egbert Matzner
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 13 Aug 2015 06:12
Last Modified: 13 Aug 2015 06:12
URI: https://eref.uni-bayreuth.de/id/eprint/18018