Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions
Permafrost peatlands are a huge carbon pool that is uniquely sensitive to global warming. However, despite the importance of peatlands in global carbon sequestration and biogeochemical cycles, few studies have characterized the distribution characteristics and drivers of soil microbial community str...
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ftmdpi:oai:mdpi.com:/1660-4601/19/22/14782/ 2023-08-20T04:09:11+02:00 Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions Lin Liu Zhongliang Wang Dalong Ma Man Zhang Lingyu Fu agris 2022-11-10 application/pdf https://doi.org/10.3390/ijerph192214782 EN eng Multidisciplinary Digital Publishing Institute Environmental Earth Science and Medical Geology https://dx.doi.org/10.3390/ijerph192214782 https://creativecommons.org/licenses/by/4.0/ International Journal of Environmental Research and Public Health; Volume 19; Issue 22; Pages: 14782 microbial community peatland Illumina sequencing ecotone permafrost Text 2022 ftmdpi https://doi.org/10.3390/ijerph192214782 2023-08-01T07:16:42Z Permafrost peatlands are a huge carbon pool that is uniquely sensitive to global warming. However, despite the importance of peatlands in global carbon sequestration and biogeochemical cycles, few studies have characterized the distribution characteristics and drivers of soil microbial community structure in forest–peatland ecotones. Here, we investigated the vertical distribution patterns of soil microbial communities in three typical peatlands along an environmental gradient using Illumina high-throughput sequencing. Our findings indicated that bacterial richness and diversity decreased with increasing soil depth in coniferous swamp (LT) and thicket swamp (HT), whereas the opposite trend was observed in a tussock swamp (NT). Additionally, these parameters decreased at 0–20 and 20–40 cm and increased at 40–60 cm along the environmental gradient (LT to NT). Principal coordinate analysis (PCoA) indicated that the soil microbial community structure was more significantly affected by peatland type than soil depth. Actinomycetota, Proteobacteria, Firmicutes, Chloroflexota, Acidobacteriota, and Bacteroidota were the predominant bacterial phyla across all soil samples. Moreover, there were no significant differences in the functional pathways between the three peatlands at each depth, except for amino acid metabolism, membrane transport, cell motility, and signal transduction. Redundancy analysis (RDA) revealed that pH and soil water content were the primary environmental factors influencing the bacterial community structure. Therefore, this study is crucial to accurately forecast potential changes in peatland ecosystems and improve our understanding of the role of peat microbes as carbon pumps in the process of permafrost degradation. Text permafrost MDPI Open Access Publishing International Journal of Environmental Research and Public Health 19 22 14782 |
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MDPI Open Access Publishing |
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English |
topic |
microbial community peatland Illumina sequencing ecotone permafrost |
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microbial community peatland Illumina sequencing ecotone permafrost Lin Liu Zhongliang Wang Dalong Ma Man Zhang Lingyu Fu Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions |
topic_facet |
microbial community peatland Illumina sequencing ecotone permafrost |
description |
Permafrost peatlands are a huge carbon pool that is uniquely sensitive to global warming. However, despite the importance of peatlands in global carbon sequestration and biogeochemical cycles, few studies have characterized the distribution characteristics and drivers of soil microbial community structure in forest–peatland ecotones. Here, we investigated the vertical distribution patterns of soil microbial communities in three typical peatlands along an environmental gradient using Illumina high-throughput sequencing. Our findings indicated that bacterial richness and diversity decreased with increasing soil depth in coniferous swamp (LT) and thicket swamp (HT), whereas the opposite trend was observed in a tussock swamp (NT). Additionally, these parameters decreased at 0–20 and 20–40 cm and increased at 40–60 cm along the environmental gradient (LT to NT). Principal coordinate analysis (PCoA) indicated that the soil microbial community structure was more significantly affected by peatland type than soil depth. Actinomycetota, Proteobacteria, Firmicutes, Chloroflexota, Acidobacteriota, and Bacteroidota were the predominant bacterial phyla across all soil samples. Moreover, there were no significant differences in the functional pathways between the three peatlands at each depth, except for amino acid metabolism, membrane transport, cell motility, and signal transduction. Redundancy analysis (RDA) revealed that pH and soil water content were the primary environmental factors influencing the bacterial community structure. Therefore, this study is crucial to accurately forecast potential changes in peatland ecosystems and improve our understanding of the role of peat microbes as carbon pumps in the process of permafrost degradation. |
format |
Text |
author |
Lin Liu Zhongliang Wang Dalong Ma Man Zhang Lingyu Fu |
author_facet |
Lin Liu Zhongliang Wang Dalong Ma Man Zhang Lingyu Fu |
author_sort |
Lin Liu |
title |
Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions |
title_short |
Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions |
title_full |
Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions |
title_fullStr |
Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions |
title_full_unstemmed |
Diversity and Distribution Characteristics of Soil Microbes across Forest–Peatland Ecotones in the Permafrost Regions |
title_sort |
diversity and distribution characteristics of soil microbes across forest–peatland ecotones in the permafrost regions |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/ijerph192214782 |
op_coverage |
agris |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
International Journal of Environmental Research and Public Health; Volume 19; Issue 22; Pages: 14782 |
op_relation |
Environmental Earth Science and Medical Geology https://dx.doi.org/10.3390/ijerph192214782 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ijerph192214782 |
container_title |
International Journal of Environmental Research and Public Health |
container_volume |
19 |
container_issue |
22 |
container_start_page |
14782 |
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1774721978395000832 |