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Changes in organic molecular marker signatures in soils amended with biochar during a three-year experiment with maize on a Fluvisol
Journal of Hydrology and Hydromechanics, Volume: 70, Issue: 4, Pages: 401 - 409
Swansea University Author:
Stefan Doerr
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©2022 Irena Atanassova et al., published by Sciendo. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence.
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DOI (Published version): 10.2478/johh-2022-0025
Abstract
Biochar is widely used as a soil amendment to improve soil properties and as a tool to absorb net carbon from the atmosphere. In this study we determined the signatures of organic molecular markers in soil following the incorporation of 5 and 10 t/ha biochar in a Fluvisol, cultivated with maize at t...
| Published in: | Journal of Hydrology and Hydromechanics |
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| ISSN: | 1338-4333 |
| Published: |
Walter de Gruyter GmbH
2022
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa62175 |
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| Abstract: |
Biochar is widely used as a soil amendment to improve soil properties and as a tool to absorb net carbon from the atmosphere. In this study we determined the signatures of organic molecular markers in soil following the incorporation of 5 and 10 t/ha biochar in a Fluvisol, cultivated with maize at the experimental field of the ISSAPP "N. Poushkarov"institute in Bulgaria. The n-alkane distribution in the biochar treated soils was uni- or bimodal maximizing at n-C17 alkane, n-C18 or C18 branched alkanes, i.e. there was an imprint of biomass burning, e.g. from the biochar due to predominance of short chain (< C20) homologues and increased microbial activity (presence of branched alkanes). This is also confirmed by the values for the average chain length (ACL) of n-alkanes which indicated prevalence of homologues of shorter chain (20-21 C atoms) in the variants of longer biochar residence time. There was evidence of trans-13-docosenamide, which originated from biochar. Fatty acids and fatty alcohols distributions also implicate microbial contribution to soil organic matter (SOM), supporting the suggestion that biochar addition can improve soil microbiological status. |
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| Keywords: |
Biochar; Organic molecular markers; Fluvisol |
| College: |
Faculty of Science and Engineering |
| Funders: |
The study was financially supported by the Project KP 06-H26/7 (2018-2021) of the NSF of the Ministry of Education and Science in Bulgaria. |
| Issue: |
4 |
| Start Page: |
401 |
| End Page: |
409 |