TY  - JOUR
AU  - Hofmann, Diana
AU  - Berns, Anne E.
AU  - Meyer, Nele
AU  - Bol, Roland
AU  - Borchard, Nils
AU  - Abdelrahman, Hamada
TI  - Historical charcoal additions alter water extractable, particulate and bulk soil C composition and stabilization
JO  - Journal of plant nutrition and soil science
VL  - 181
IS  - 6
SN  - 0044-3263
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2018-07500
SP  - 809-817
PY  - 2018
AB  - The objective of this work was to investigate the chemical composition and thequantitative changes in soil organic matter (SOM) fractions in response to multiple historical inputs of charcoal that ceased >60 years ago. The topsoil (0–5 cm) and subsoil(5–20 cm) samples of charcoal enriched soils and the unamended reference soils wereassessed for C and N contents in bulk soil, particulate organic matter (POM) fractionsand water extractable organic matter (WEOM). The SOM molecular characteristicswere investigated in the solid phase by nuclear magnetic resonance (NMR) and in theWEOM by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS).Formerly added charcoal additions reduced the extracted amount of WEOM and alteredPOM pattern: an increased proportion of C and N stored in coarse, intermediate, andfine POM relative to corresponding total C and N was found in subsoils. In contrast, Cand N stored in the residual fraction (<20 μm) decreased. NMR results revealed ahigher aromaticity of SOM in charcoal enriched soils, while the FT-ICR-MS resultsindicated an increased presence of lignin- and tannin-like compounds in the WEOM ofthese soils. Former charcoal additions enhanced soils capacity to retain and stabilize Cand N. Particularly, the presence of charcoal particles elevated C and N stored in largePOM fractions >20 μm, which presumably increases soil porosity and thus the soils’capacity to retain water.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000451906900001
DO  - DOI:10.1002/jpln.201800261
UR  - https://juser.fz-juelich.de/record/858641
ER  -