Universität zu Köln

Lehndorff, Eva, Brodowski, Sonja, Schmidt, Lothar, Haumaier, Ludwig, Grootes, Pieter M., Rethemeyer, Janet ORCID: 0000-0001-6698-4186 and Amelung, Wulf ORCID: 0000-0002-4920-4667 (2015). Industrial carbon input to arable soil since 1958. Org. Geochem., 80. S. 46 - 53. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 0146-6380

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Abstract

Tracing the history of industrial fossil fuel combustion on the carbon stock in soil is challenging, since it is mixed with other soil organic carbon (SOC). Isolation of black carbon (BC) yields a mixture of diagenetic fossil C and pyrogenic BC from biomass and fossil fuel combustion. We investigated the degree to which fossil fuel combustion emissions have contributed to SOC and BC and how deposition dynamics have changed in the last century. As only biomass-derived BC contains C-14, we determined the content and C-14 signature of the benzene polycarboxylic acid (BPCA) fraction as the product of total BC oxidation. From an isotopic mass balance model, the proportion of fossil BC deposition and its contribution to SOC was calculated. Soil samples were taken from 1958-2002 from a long term agricultural field experiment in Halle, Germany; the area represents one of the most productive lignite mining areas in the world. Between 1958 and 1971, total BC content increased significantly (1.9 +/- 0.1-2.30 +/- 0.06 g/kg soil), and the BC-specific radiocarbon content decreased from 29.6 +/- 0.4 to 26.9 +/- 0.2 pMC, corresponding to 1.35 +/- 0.07 and 1.8 +/- 0.08 g/kg BC from diagenetic C and fossil fuel combustion (denoted here as fossil BC). We infer an increase in fossil BC content of 30% within this timespan, with a net input rate of 9 g/m(2) yr. In the 1970s, after railway electrification, reduction of lignite mining and related heavy industries, fossil BC deposition to soil was no longer significant. Overall, about 120 g/m(2) fossil BC was deposited between 1958-1971, with 390 g/m(2) before 1958. Fossil BC contributed ca. 75% of total BC and 15% SOC to arable soil, without any significant change in the following 30 yr (1971-2002). (C) 2015 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lehndorff, Eva UNSPECIFIED UNSPECIFIED UNSPECIFIED Brodowski, Sonja UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmidt, Lothar UNSPECIFIED UNSPECIFIED UNSPECIFIED Haumaier, Ludwig UNSPECIFIED UNSPECIFIED UNSPECIFIED Grootes, Pieter M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rethemeyer, Janet UNSPECIFIED orcid.org/0000-0001-6698-4186 UNSPECIFIED Amelung, Wulf UNSPECIFIED orcid.org/0000-0002-4920-4667 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-411310
DOI:	10.1016/j.orggeochem.2015.01.003
Journal or Publication Title:	Org. Geochem.
Volume:	80
Page Range:	S. 46 - 53
Date:	2015
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	0146-6380
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language POLYCYCLIC AROMATIC-HYDROCARBONS; BLACK CARBON; ORGANIC-MATTER; CHERNOZEMIC SOILS; FOSSIL-FUEL; C-14 DATA; RADIOCARBON; CHARCOAL; CHINA; RECONSTRUCTION Multiple languages Geochemistry & Geophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/41131