Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau
Under warm climate conditions, permafrost thawing results in the substantial release of carbon (C) into the atmosphere and potentially triggers strong positive feedback to global warming. Soil microorganisms play an important role in decomposing organic C in permafrost, thus potentially regulating t...
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ftpubmed:oai:pubmedcentral.nih.gov:9791195 2023-05-15T17:55:37+02:00 Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau Shao, Ming Zhang, Shengyin Niu, Bin Pei, Yu Song, Sen Lei, Tianzhu Yun, Hanbo 2022-12-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9791195/ http://www.ncbi.nlm.nih.gov/pubmed/36578569 https://doi.org/10.3389/fmicb.2022.1007194 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9791195/ http://www.ncbi.nlm.nih.gov/pubmed/36578569 http://dx.doi.org/10.3389/fmicb.2022.1007194 Copyright © 2022 Shao, Zhang, Niu, Pei, Song, Lei and Yun. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Front Microbiol Microbiology Text 2022 ftpubmed https://doi.org/10.3389/fmicb.2022.1007194 2023-01-01T01:40:44Z Under warm climate conditions, permafrost thawing results in the substantial release of carbon (C) into the atmosphere and potentially triggers strong positive feedback to global warming. Soil microorganisms play an important role in decomposing organic C in permafrost, thus potentially regulating the ecosystem C balance in permafrost-affected regions. Soil microbial community and biomass are mainly affected by soil organic carbon (SOC) content and soil texture. Most studies have focused on acidic permafrost soil (pH < 7), whereas few examined alkaline permafrost-affected soil (pH > 7). In this study, we analyzed soil microbial communities and biomass in the alpine desert and steppe on the Tibetan plateau, where the soil pH values were approximately 8.7 ± 0.2 and 8.5 ± 0.1, respectively. Our results revealed that microbial biomass was significantly associated with mean grain size (MGS) and SOC content in alkaline permafrost-affected soils (p < 0.05). In particular, bacterial and fungal biomasses were affected by SOC content in the alpine steppe, whereas bacterial and fungal biomasses were mainly affected by MGS and SOC content, respectively, in the alpine desert. Combined with the results of the structural equation model, those findings suggest that SOC content affects soil texture under high pH-value (pH 8–9) and that soil microbial biomass is indirectly affected. Soils in the alpine steppe and desert are dominated by plagioclase, which provides colonization sites for bacterial communities. This study aimed to highlight the importance of soil texture in managing soil microbial biomass and demonstrate the differential impacts of soil texture on fungal and bacterial communities in alkaline permafrost-affected regions. Text permafrost PubMed Central (PMC) Frontiers in Microbiology 13 |
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Microbiology |
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Microbiology Shao, Ming Zhang, Shengyin Niu, Bin Pei, Yu Song, Sen Lei, Tianzhu Yun, Hanbo Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau |
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Microbiology |
description |
Under warm climate conditions, permafrost thawing results in the substantial release of carbon (C) into the atmosphere and potentially triggers strong positive feedback to global warming. Soil microorganisms play an important role in decomposing organic C in permafrost, thus potentially regulating the ecosystem C balance in permafrost-affected regions. Soil microbial community and biomass are mainly affected by soil organic carbon (SOC) content and soil texture. Most studies have focused on acidic permafrost soil (pH < 7), whereas few examined alkaline permafrost-affected soil (pH > 7). In this study, we analyzed soil microbial communities and biomass in the alpine desert and steppe on the Tibetan plateau, where the soil pH values were approximately 8.7 ± 0.2 and 8.5 ± 0.1, respectively. Our results revealed that microbial biomass was significantly associated with mean grain size (MGS) and SOC content in alkaline permafrost-affected soils (p < 0.05). In particular, bacterial and fungal biomasses were affected by SOC content in the alpine steppe, whereas bacterial and fungal biomasses were mainly affected by MGS and SOC content, respectively, in the alpine desert. Combined with the results of the structural equation model, those findings suggest that SOC content affects soil texture under high pH-value (pH 8–9) and that soil microbial biomass is indirectly affected. Soils in the alpine steppe and desert are dominated by plagioclase, which provides colonization sites for bacterial communities. This study aimed to highlight the importance of soil texture in managing soil microbial biomass and demonstrate the differential impacts of soil texture on fungal and bacterial communities in alkaline permafrost-affected regions. |
format |
Text |
author |
Shao, Ming Zhang, Shengyin Niu, Bin Pei, Yu Song, Sen Lei, Tianzhu Yun, Hanbo |
author_facet |
Shao, Ming Zhang, Shengyin Niu, Bin Pei, Yu Song, Sen Lei, Tianzhu Yun, Hanbo |
author_sort |
Shao, Ming |
title |
Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau |
title_short |
Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau |
title_full |
Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau |
title_fullStr |
Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau |
title_full_unstemmed |
Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau |
title_sort |
soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the tibetan plateau |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9791195/ http://www.ncbi.nlm.nih.gov/pubmed/36578569 https://doi.org/10.3389/fmicb.2022.1007194 |
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permafrost |
genre_facet |
permafrost |
op_source |
Front Microbiol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9791195/ http://www.ncbi.nlm.nih.gov/pubmed/36578569 http://dx.doi.org/10.3389/fmicb.2022.1007194 |
op_rights |
Copyright © 2022 Shao, Zhang, Niu, Pei, Song, Lei and Yun. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2022.1007194 |
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Frontiers in Microbiology |
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13 |
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1766163581860052992 |