NaOH-extractable organic matter of andic soils from Galicia (NW Spain) under different land use regimes: a pyrolysis GC/MS study

J.R. Verde, P. Buurman, A. Martinez-Cortizas, F. Macias, M. Camps Arbestain

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Abstract

The objective of this study was to determine to what extent the attenuation or loss of andic soil properties caused by land use change ¿ from forest (FOR, average C content 118.2 ± 23.7 g kg¿1) to agricultural land (AGR, average C content 55.7 ± 16.7 g kg¿1) use ¿ is reflected in soil organic matter (SOM) at the molecular level. For this, NaOH-extractable SOM of A horizons from 17 soils developed on amphibolitic parent material in NW Spain was studied by pyrolysis gas chromatography spectrometry (Py-GC/MS). We also included two buried andic A horizons (PAL, 2200 cal yr BP in age) on the same parent material, as a reference for the molecular composition of SOM from soils without recent litter additions. Organic matter of PAL soils had a composition largely different from that of superficial soils (FOR and AGR), with an important relative contribution of microbial polysaccharides and N-compounds, and an absence of compounds that characterize fresh plant litter (e.g. lignins). In the superficial soils, the relative contribution of lignin-derived compounds was greater in AGR than in FOR soils. Differences were also observed in the relative contribution of aliphatic compounds, FOR soils being enriched in this type of components compared with AGR soils. The results indicated that land use change from FOR to AGR, which was accompanied by a decrease in total SOM, resulted in an enrichment in primary SOM. The smaller relative abundance of primary SOM derivatives in andic FOR soils indicates that these compounds were quickly degraded in Andisols
Original languageEnglish
Pages (from-to)1096-1110
JournalEuropean Journal of Soil Science
Volume59
Issue number6
DOIs
Publication statusPublished - 2008

Fingerprint

pyrolysis
soil organic matter
land use
Spain
organic matter
soil
A horizons
land use change
parent material
lignin
litter
Andisols
land use regime
Andisol
plant litter
polysaccharide
agricultural land
spectroscopy
soil properties
polysaccharides

Keywords

  • polycyclic aromatic-hydrocarbons
  • ionization mass-spectrometry
  • volcanic ash soils
  • gas chromatography
  • humic substances
  • forest soil
  • acids
  • carbon
  • decomposition
  • preservation

Cite this

Verde, J.R. ; Buurman, P. ; Martinez-Cortizas, A. ; Macias, F. ; Camps Arbestain, M. / NaOH-extractable organic matter of andic soils from Galicia (NW Spain) under different land use regimes: a pyrolysis GC/MS study. In: European Journal of Soil Science. 2008 ; Vol. 59, No. 6. pp. 1096-1110.
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abstract = "The objective of this study was to determine to what extent the attenuation or loss of andic soil properties caused by land use change ¿ from forest (FOR, average C content 118.2 ± 23.7 g kg¿1) to agricultural land (AGR, average C content 55.7 ± 16.7 g kg¿1) use ¿ is reflected in soil organic matter (SOM) at the molecular level. For this, NaOH-extractable SOM of A horizons from 17 soils developed on amphibolitic parent material in NW Spain was studied by pyrolysis gas chromatography spectrometry (Py-GC/MS). We also included two buried andic A horizons (PAL, 2200 cal yr BP in age) on the same parent material, as a reference for the molecular composition of SOM from soils without recent litter additions. Organic matter of PAL soils had a composition largely different from that of superficial soils (FOR and AGR), with an important relative contribution of microbial polysaccharides and N-compounds, and an absence of compounds that characterize fresh plant litter (e.g. lignins). In the superficial soils, the relative contribution of lignin-derived compounds was greater in AGR than in FOR soils. Differences were also observed in the relative contribution of aliphatic compounds, FOR soils being enriched in this type of components compared with AGR soils. The results indicated that land use change from FOR to AGR, which was accompanied by a decrease in total SOM, resulted in an enrichment in primary SOM. The smaller relative abundance of primary SOM derivatives in andic FOR soils indicates that these compounds were quickly degraded in Andisols",
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author = "J.R. Verde and P. Buurman and A. Martinez-Cortizas and F. Macias and {Camps Arbestain}, M.",
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NaOH-extractable organic matter of andic soils from Galicia (NW Spain) under different land use regimes: a pyrolysis GC/MS study. / Verde, J.R.; Buurman, P.; Martinez-Cortizas, A.; Macias, F.; Camps Arbestain, M.

In: European Journal of Soil Science, Vol. 59, No. 6, 2008, p. 1096-1110.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - NaOH-extractable organic matter of andic soils from Galicia (NW Spain) under different land use regimes: a pyrolysis GC/MS study

AU - Verde, J.R.

AU - Buurman, P.

AU - Martinez-Cortizas, A.

AU - Macias, F.

AU - Camps Arbestain, M.

PY - 2008

Y1 - 2008

N2 - The objective of this study was to determine to what extent the attenuation or loss of andic soil properties caused by land use change ¿ from forest (FOR, average C content 118.2 ± 23.7 g kg¿1) to agricultural land (AGR, average C content 55.7 ± 16.7 g kg¿1) use ¿ is reflected in soil organic matter (SOM) at the molecular level. For this, NaOH-extractable SOM of A horizons from 17 soils developed on amphibolitic parent material in NW Spain was studied by pyrolysis gas chromatography spectrometry (Py-GC/MS). We also included two buried andic A horizons (PAL, 2200 cal yr BP in age) on the same parent material, as a reference for the molecular composition of SOM from soils without recent litter additions. Organic matter of PAL soils had a composition largely different from that of superficial soils (FOR and AGR), with an important relative contribution of microbial polysaccharides and N-compounds, and an absence of compounds that characterize fresh plant litter (e.g. lignins). In the superficial soils, the relative contribution of lignin-derived compounds was greater in AGR than in FOR soils. Differences were also observed in the relative contribution of aliphatic compounds, FOR soils being enriched in this type of components compared with AGR soils. The results indicated that land use change from FOR to AGR, which was accompanied by a decrease in total SOM, resulted in an enrichment in primary SOM. The smaller relative abundance of primary SOM derivatives in andic FOR soils indicates that these compounds were quickly degraded in Andisols

AB - The objective of this study was to determine to what extent the attenuation or loss of andic soil properties caused by land use change ¿ from forest (FOR, average C content 118.2 ± 23.7 g kg¿1) to agricultural land (AGR, average C content 55.7 ± 16.7 g kg¿1) use ¿ is reflected in soil organic matter (SOM) at the molecular level. For this, NaOH-extractable SOM of A horizons from 17 soils developed on amphibolitic parent material in NW Spain was studied by pyrolysis gas chromatography spectrometry (Py-GC/MS). We also included two buried andic A horizons (PAL, 2200 cal yr BP in age) on the same parent material, as a reference for the molecular composition of SOM from soils without recent litter additions. Organic matter of PAL soils had a composition largely different from that of superficial soils (FOR and AGR), with an important relative contribution of microbial polysaccharides and N-compounds, and an absence of compounds that characterize fresh plant litter (e.g. lignins). In the superficial soils, the relative contribution of lignin-derived compounds was greater in AGR than in FOR soils. Differences were also observed in the relative contribution of aliphatic compounds, FOR soils being enriched in this type of components compared with AGR soils. The results indicated that land use change from FOR to AGR, which was accompanied by a decrease in total SOM, resulted in an enrichment in primary SOM. The smaller relative abundance of primary SOM derivatives in andic FOR soils indicates that these compounds were quickly degraded in Andisols

KW - polycyclic aromatic-hydrocarbons

KW - ionization mass-spectrometry

KW - volcanic ash soils

KW - gas chromatography

KW - humic substances

KW - forest soil

KW - acids

KW - carbon

KW - decomposition

KW - preservation

U2 - 10.1111/j.1365-2389.2008.01082.x

DO - 10.1111/j.1365-2389.2008.01082.x

M3 - Article

VL - 59

SP - 1096

EP - 1110

JO - European Journal of Soil Science

JF - European Journal of Soil Science

SN - 1351-0754

IS - 6

ER -