在Fluvisol上对玉米进行为期三年的试验期间,生物炭改良土壤中有机分子标记特征的变化

IF 2.3 4区 环境科学与生态学 Q3 WATER RESOURCES
I. Atanassova, M. Harizanova, Maya Benkova, S. Doerr
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引用次数: 2

摘要

生物炭作为一种土壤改良剂被广泛应用于改善土壤性质和吸收大气净碳的工具。在这项研究中,我们测定了在ISSAPP N试验田与玉米一起栽培的Fluvisol中加入5和10 t/ha生物炭后土壤中有机分子标记的特征。保加利亚的普什卡罗夫研究所。生物炭处理土壤中正构烷烃分布呈单峰或双峰分布,以正c17烷烃、正C18或正C18支链烷烃为主,即由于短链(< C20)同源物的优势和微生物活性的增加(支链烷烃的存在),生物炭具有生物质燃烧的印记。正构烷烃的平均链长(ACL)值也证实了这一点,这表明在较长生物炭停留时间的变体中,较短链(20-21 C原子)的同源物普遍存在。有证据表明反式13-二十二酰胺来源于生物炭。脂肪酸和脂肪醇的分布也与微生物对土壤有机质(SOM)的贡献有关,支持了添加生物炭可以改善土壤微生物状况的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Changes in organic molecular marker signatures in soils amended with biochar during a three-year experiment with maize on a Fluvisol
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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来源期刊
CiteScore
4.20
自引率
5.30%
发文量
30
审稿时长
>12 weeks
期刊介绍: JOURNAL OF HYDROLOGY AND HYDROMECHANICS is an international open access journal for the basic disciplines of water sciences. The scope of hydrology is limited to biohydrology, catchment hydrology and vadose zone hydrology, primarily of temperate zone. The hydromechanics covers theoretical, experimental and computational hydraulics and fluid mechanics in various fields, two- and multiphase flows, including non-Newtonian flow, and new frontiers in hydraulics. The journal is published quarterly in English. The types of contribution include: research and review articles, short communications and technical notes. The articles have been thoroughly peer reviewed by international specialists and promoted to researchers working in the same field.
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