Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf
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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ftunivfreestate:oai:figshare.com:article/21709409 2023-05-15T17:55:33+02:00 Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf Ming Shao (323877) Shengyin Zhang (12805917) Bin Niu (1589680) Yu Pei (758110) Sen Song (8305) Tianzhu Lei (11452847) Hanbo Yun (14245817) 2022-12-12T04:39:35Z https://doi.org/10.3389/fmicb.2022.1007194.s001 unknown https://figshare.com/articles/presentation/Presentation_1_Soil_texture_influences_soil_bacterial_biomass_in_the_permafrost-affected_alpine_desert_of_the_Tibetan_plateau_pdf/21709409 doi:10.3389/fmicb.2022.1007194.s001 CC BY 4.0 CC-BY Microbiology Microbial Genetics Microbial Ecology Mycology soil texture soil organic carbon microbial biomass Tibetan plateau climate warming alkaline permafrost regions Text Presentation 2022 ftunivfreestate https://doi.org/10.3389/fmicb.2022.1007194.s001 2022-12-16T00:35:36Z 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. Conference Object permafrost KovsieScholar Repository (University of the Free State - UFS UV) |
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Open Polar |
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KovsieScholar Repository (University of the Free State - UFS UV) |
op_collection_id |
ftunivfreestate |
language |
unknown |
topic |
Microbiology Microbial Genetics Microbial Ecology Mycology soil texture soil organic carbon microbial biomass Tibetan plateau climate warming alkaline permafrost regions |
spellingShingle |
Microbiology Microbial Genetics Microbial Ecology Mycology soil texture soil organic carbon microbial biomass Tibetan plateau climate warming alkaline permafrost regions Ming Shao (323877) Shengyin Zhang (12805917) Bin Niu (1589680) Yu Pei (758110) Sen Song (8305) Tianzhu Lei (11452847) Hanbo Yun (14245817) Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf |
topic_facet |
Microbiology Microbial Genetics Microbial Ecology Mycology soil texture soil organic carbon microbial biomass Tibetan plateau climate warming alkaline permafrost regions |
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 |
Conference Object |
author |
Ming Shao (323877) Shengyin Zhang (12805917) Bin Niu (1589680) Yu Pei (758110) Sen Song (8305) Tianzhu Lei (11452847) Hanbo Yun (14245817) |
author_facet |
Ming Shao (323877) Shengyin Zhang (12805917) Bin Niu (1589680) Yu Pei (758110) Sen Song (8305) Tianzhu Lei (11452847) Hanbo Yun (14245817) |
author_sort |
Ming Shao (323877) |
title |
Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf |
title_short |
Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf |
title_full |
Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf |
title_fullStr |
Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf |
title_full_unstemmed |
Presentation_1_Soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the Tibetan plateau.pdf |
title_sort |
presentation_1_soil texture influences soil bacterial biomass in the permafrost-affected alpine desert of the tibetan plateau.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmicb.2022.1007194.s001 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://figshare.com/articles/presentation/Presentation_1_Soil_texture_influences_soil_bacterial_biomass_in_the_permafrost-affected_alpine_desert_of_the_Tibetan_plateau_pdf/21709409 doi:10.3389/fmicb.2022.1007194.s001 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2022.1007194.s001 |
_version_ |
1766163496994603008 |