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Black carbon in the zonal steppe soils of Russia

Title data

Rodionov, Andrej ; Amelung, Wulf ; Haumaier, Ludwig ; Urusevskaja, Inga ; Zech, Wolfgang:
Black carbon in the zonal steppe soils of Russia.
In: Journal of Plant Nutrition and Soil Science. Vol. 169 (2006) Issue 3 . - pp. 363-369.
ISSN 1436-8730
DOI: https://doi.org/10.1002/jpln.200521813

Abstract in another language

Black Mollisols are typically rich in charred organic matter, however, little is known about the zonal distribution of black C (BC) in steppe soils. In this study, we used benzene polycarboxylic acids (BPCA) as specific markers for BC in particle-size fractions of depth profiles in several zonal soils (Greyzem, Phaeozem, Chernozem, Kastanozem) of the Russian steppe. In addition, liquid-state 13C-NMR spectra were obtained on the alkaline-soluble soil organic matter (SOM). The results showed that both the content and depth distribution of BC varies in the different soil types; the concentration of BC in the bulk top soils being closely related to the aromaticity of the SOM (r2 = 0.98 for the native topsoils, 0.83 for top- and subsurface soils). Especially the Chernozems were rich in aromatic SOM, which partly contained more than 17% BC of total C, most of which being allocated in the mineral fractions. Long-term arable cropping did not reduce the BC contents of the surface soil, though it did promote the enrichment of BC in the silt fractions. The same shift was detected as soil depth increased. We conclude that BC is not fully inert in these soils, but apparently can be preserved in the silt as decomposition of SOM increased, i.e., it accumulates exactly in that fraction, which has been formerly assigned to contain old, aromatic C.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER39569
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
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: 11 Sep 2015 06:33
Last Modified: 04 Mar 2016 07:01
URI: https://eref.uni-bayreuth.de/id/eprint/19180