Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga)
The boreal forests of Russia are one of the largest forest areas on the planet. As a result of climate change, the rate of carbon sequestration and stabilization of organic matter are important indicators of environmental conservation. To understand mechanisms of stabilization and the structure of s...
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MDPI AG
2022
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ftdoajarticles:oai:doaj.org/article:ba5bb9db84c046ab8c9f311e92931969 2024-01-07T09:46:58+01:00 Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga) Vyacheslav Polyakov Evgeny Abakumov Evgeny Lodygin Roman Vasilevich Alla Lapidus 2022-07-01T00:00:00Z https://doi.org/10.3390/agronomy12081760 https://doaj.org/article/ba5bb9db84c046ab8c9f311e92931969 EN eng MDPI AG https://www.mdpi.com/2073-4395/12/8/1760 https://doaj.org/toc/2073-4395 doi:10.3390/agronomy12081760 2073-4395 https://doaj.org/article/ba5bb9db84c046ab8c9f311e92931969 Agronomy, Vol 12, Iss 8, p 1760 (2022) humic acids Chernevaya taiga molecular weight NMR spectroscopy Retisols Agriculture S article 2022 ftdoajarticles https://doi.org/10.3390/agronomy12081760 2023-12-10T01:45:56Z The boreal forests of Russia are one of the largest forest areas on the planet. As a result of climate change, the rate of carbon sequestration and stabilization of organic matter are important indicators of environmental conservation. To understand mechanisms of stabilization and the structure of soil organic carbon, the molecular-weight (MW) distribution of humic acids (HAs) in soils of the central deciduous-forest zone of boreal forests (Chernevaya taiga, transitional ecotone forest, coniferous forest) was studied. Analysis of the MW distribution of HAs was conducted using size-exclusion chromatography. This approach allowed us to obtain the distribution of high-, medium-, and low-molecular fractions of HAs. It has been revealed that the content of the low-MW fraction prevails over the content of the medium- and high-MW fractions of HAs, which indicates the process of stabilization in soil organic matter. The accumulation of low-molecular-weight fraction occurs with the aromaticity increase in HAs, which indicates that HAs with a relatively high proportion of aromatic fragments have smaller hydrodynamic radius and a lower MW. It has been statistically substantiated that the low-molecular-weight fraction correlates with the content of aromatic compounds and carboxyl structural fragments of HAs, which indicates the resistance of the soil organic matter of Chernevaya taiga to biodegradation. Article in Journal/Newspaper taiga Directory of Open Access Journals: DOAJ Articles Agronomy 12 8 1760 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
humic acids Chernevaya taiga molecular weight NMR spectroscopy Retisols Agriculture S |
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humic acids Chernevaya taiga molecular weight NMR spectroscopy Retisols Agriculture S Vyacheslav Polyakov Evgeny Abakumov Evgeny Lodygin Roman Vasilevich Alla Lapidus Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga) |
topic_facet |
humic acids Chernevaya taiga molecular weight NMR spectroscopy Retisols Agriculture S |
description |
The boreal forests of Russia are one of the largest forest areas on the planet. As a result of climate change, the rate of carbon sequestration and stabilization of organic matter are important indicators of environmental conservation. To understand mechanisms of stabilization and the structure of soil organic carbon, the molecular-weight (MW) distribution of humic acids (HAs) in soils of the central deciduous-forest zone of boreal forests (Chernevaya taiga, transitional ecotone forest, coniferous forest) was studied. Analysis of the MW distribution of HAs was conducted using size-exclusion chromatography. This approach allowed us to obtain the distribution of high-, medium-, and low-molecular fractions of HAs. It has been revealed that the content of the low-MW fraction prevails over the content of the medium- and high-MW fractions of HAs, which indicates the process of stabilization in soil organic matter. The accumulation of low-molecular-weight fraction occurs with the aromaticity increase in HAs, which indicates that HAs with a relatively high proportion of aromatic fragments have smaller hydrodynamic radius and a lower MW. It has been statistically substantiated that the low-molecular-weight fraction correlates with the content of aromatic compounds and carboxyl structural fragments of HAs, which indicates the resistance of the soil organic matter of Chernevaya taiga to biodegradation. |
format |
Article in Journal/Newspaper |
author |
Vyacheslav Polyakov Evgeny Abakumov Evgeny Lodygin Roman Vasilevich Alla Lapidus |
author_facet |
Vyacheslav Polyakov Evgeny Abakumov Evgeny Lodygin Roman Vasilevich Alla Lapidus |
author_sort |
Vyacheslav Polyakov |
title |
Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga) |
title_short |
Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga) |
title_full |
Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga) |
title_fullStr |
Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga) |
title_full_unstemmed |
Distribution of Molecular Weight of Humic Substances Isolated from Soils of Tallgrass Temperate Rainforests (Chernevaya Taiga) |
title_sort |
distribution of molecular weight of humic substances isolated from soils of tallgrass temperate rainforests (chernevaya taiga) |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/agronomy12081760 https://doaj.org/article/ba5bb9db84c046ab8c9f311e92931969 |
genre |
taiga |
genre_facet |
taiga |
op_source |
Agronomy, Vol 12, Iss 8, p 1760 (2022) |
op_relation |
https://www.mdpi.com/2073-4395/12/8/1760 https://doaj.org/toc/2073-4395 doi:10.3390/agronomy12081760 2073-4395 https://doaj.org/article/ba5bb9db84c046ab8c9f311e92931969 |
op_doi |
https://doi.org/10.3390/agronomy12081760 |
container_title |
Agronomy |
container_volume |
12 |
container_issue |
8 |
container_start_page |
1760 |
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1787428893793189888 |