CHEMICAL COMPOSITION OF THE ORGANIC MATTER IN NEOLITHIC SOIL MATERIAL AS REVEALED BY CPMAS 13C NMR SPECTROSCOPY, POLYSACCHARIDE ANALYSIS, AND CuO OXIDATION

Schmid, Eva-Maria; Knicker, Heike; Bäumler, Rupert; Kögel‐Knabner, Ingrid

doi:10.1097/00010694-200109000-00001

Cited by 25 publications

(16 citation statements)

References 27 publications

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“…The ancient soil horizons exhibit lower value and chroma than their natural counterparts. A comparable result attributed to the high aromatic content in the archeological soil material was recently obtained by Schmid et al (2001) when examining the filling of Neolithic pits. In a previous study ) the darkness of german chernozemic soils increased with the content of black carbon.…”

Section: The Mineral Matrixsupporting

confidence: 77%

Prehistoric Alteration of Soil Properties in a Central German Chernozemic Soil

Kleber¹,

Röner²,

Chenu

et al. 2003

Soil Science

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Section: The Mineral Matrixsupporting

confidence: 77%

Prehistoric Alteration of Soil Properties in a Central German Chernozemic Soil

Kleber¹,

Röner²,

Chenu

et al. 2003

Soil Science

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“…A similar result was found by Spielvogel et al (2004). Several studies have observed that soils darken with increasing content of charred organic C or aromatic C contents (Schmidt et al, 1999;Schmid et al, 2001;Knicker et al, 2006). Our results further indicate that grass-derived heavy fractions were darker than those with C 3 signature formed under Araucaria forest or shrubs with comparable aromatic C concentration ( Figure 5).…”

Section: Soil Organic Matter Signatures In Grassland With Long-term Fsupporting

confidence: 89%

Changes in soil organic matter composition are associated with forest encroachment into grassland with long‐term fire history

Dümig

Knicker

Schád

et al. 2009

European J Soil Science

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Summary This study investigates if Araucaria forest (C3 metabolism) expansion on frequently burnt grassland (C4 metabolism) in the southern Brazilian highland is linked to the chemical composition of soil organic matter (SOM) in non‐allophanic Andosols. We used the 13C/12C isotopic signature to group heavy organo‐mineral fractions according to source vegetation and 13C NMR spectroscopy, lignin analyses (CuO oxidation) and measurement of soil colour lightness to characterize their chemical compositions. Large proportions of aromatic carbon (C) combined with small contents of lignin‐derived phenols in the heavy fractions of grassland soils and grass‐derived lower horizons of Araucaria forest soils indicate the presence of charred grass residues in SOM. The contribution of this material may have led to the unusual increase in C/N ratios with depth in burnt grassland soils and to the differentiation of C3‐ and C4‐derived SOM, because heavy fractions from unburnt Araucaria forest and shrubland soils have smaller proportions of aromatic C, smaller C/N ratios and are paler compared with those with C4 signatures. We found that lignins are not applicable as biomarkers for plant origin in these soils with small contents of strongly degraded and modified lignins as the plant‐specific lignin patterns are absent in heavy fractions. In contrast, the characteristic contents of alkyl C and O/N‐alkyl C of C3 trees or shrubs and C4 grasses are reflected in the heavy fractions. They show consistent changes of the (alkyl C)/(O/N‐alkyl C) ratio and the 13C/12C isotopic signature with soil depth, indicating their association with C4 and C3 vegetation origin. This study demonstrates that soils may preserve organic matter components from earlier vegetation and land‐use, indicating that the knowledge of past vegetation covers is necessary to interpret SOM composition.

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“…Geochemical analyses of pit fillings in a Middle to Late Neolithic settlement near Munich (Münchshöfen Kultur, 4600-4200 BC), provided further evidence that pit fillings within prehistoric settlements were not similar to natural soils (Schmid et al, 2001). The black settlement pit fillings differed from A horizons of Phaeozems, when polysaccharide and lignin were analyzed by CPMAS 13 C NMR spectroscopy.…”

Section: Do Luvic Phaeozems Differ From Prehistoric Settlement Soils?mentioning

confidence: 98%

Prehistoric alteration of soil in the Lower Rhine Basin, Northwest Germany—archaeological, 14C and geochemical evidence

Gerlach¹,

Baumewerd-Schmidt

Borg

et al. 2006

Geoderma

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CHEMICAL COMPOSITION OF THE ORGANIC MATTER IN NEOLITHIC SOIL MATERIAL AS REVEALED BY CPMAS 13C NMR SPECTROSCOPY, POLYSACCHARIDE ANALYSIS, AND CuO OXIDATION

Abstract: El artículo seleccionado no se encuentra disponible por ahora a texto completo por no haber sido facilitado todavía por el investigador a cargo del archivo del mismo.

Cited by 25 publications

References 27 publications

Prehistoric Alteration of Soil Properties in a Central German Chernozemic Soil

Prehistoric Alteration of Soil Properties in a Central German Chernozemic Soil

Changes in soil organic matter composition are associated with forest encroachment into grassland with long‐term fire history

Prehistoric alteration of soil in the Lower Rhine Basin, Northwest Germany—archaeological, 14C and geochemical evidence

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