Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau
[Objective] To study the characteristics of changes in chemical properties and diversity and structural composition of soil microbial communities in Pinus yun-nanensis soils on the Central Yunnan Plateau under nitrogen deposition, and to analyze the correlation between soil microorganisms and soil c...
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Editorial Department of Journal of Soil and Water Conservation
2024-12-01
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| Series: | Shuitu Baochi Xuebao |
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| Online Access: | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240629 |
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| author | SONG Chenggong WANG Keqin SONG Yali LI Xiaodong ZHANG Jiguo LI Yun DENG Qiujiang |
| author_facet | SONG Chenggong WANG Keqin SONG Yali LI Xiaodong ZHANG Jiguo LI Yun DENG Qiujiang |
| author_sort | SONG Chenggong |
| collection | DOAJ |
| description | [Objective] To study the characteristics of changes in chemical properties and diversity and structural composition of soil microbial communities in Pinus yun-nanensis soils on the Central Yunnan Plateau under nitrogen deposition, and to analyze the correlation between soil microorganisms and soil chemical properties, in order to provide a scientific basis for understanding the trend of changes in nutrient cycling in forest soil ecosystems under nitrogen deposition and observing soil microbiological changes. [Method] The soil of P. yunnanensis forests on the Central Yunnan Plateau was selected as the research object, CO(NH2)2 was used as the N source, and four different gradients were set up for simulated N deposition experiments, including control CK [N 0 g/(m2·a)], low nitrogen LN [N 10 g/(m2·a)], medium nitrogen MN [N 20 g/(m2·a)], and high nitrogen HN [N 25 g/(m2·a)], the structure and diversity of soil bacterial and fungal community were analyzed, and the characteristics of the changes of soil pH, TOC, TN, TP, NH+4-N and NO-3-N were determined. [Results] (1) In both the dry and rainy seasons, soil pH and TOC content were reduced, and TN was increased under each N treatment when compared with CK, and both NH+4-N and NO-3-N were increased at MN and HN compared to CK; (2) Both bacterial and fungal α-diversity were higher in the rainy season than in the dry season; bacterial α-diversity increased at LN under both seasons compared to CK, whereas fungi α-diversity increased at LN in the dry season; (3) In both the dry and rainy seasons, the dominant bacterial phyla were Proteobacteria, Acidobacteria and Actinobacteria, and the dominant fungal phyla were Basidiomycota, Ascomycota and Mortierellomycota; (4) The dominant bacterial and fungal genera were significantly correlated with pH, TOC, TN and NH-3-N during the dry and wet seasons. [Conclusion] Nitrogen deposition can provide soil microorganisms with effective nutrients such as NH+4-N and NH-3-N, but soil acidification due to nitrogen deposition can reduce soil TOC content and affect the structure of soil microbial communities. |
| format | Article |
| id | doaj-art-4a1b0327f99c479d844069cc54e91212 |
| institution | Kabale University |
| issn | 1009-2242 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Department of Journal of Soil and Water Conservation |
| record_format | Article |
| series | Shuitu Baochi Xuebao |
| spelling | doaj-art-4a1b0327f99c479d844069cc54e912122025-02-10T07:24:20ZzhoEditorial Department of Journal of Soil and Water ConservationShuitu Baochi Xuebao1009-22422024-12-0138627328310.13870/j.cnki.stbcxb.2024.06.0091009-2242-(2024)06-0273-11Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan PlateauSONG Chenggong0WANG Keqin1SONG Yali2LI Xiaodong3ZHANG Jiguo4LI Yun5DENG Qiujiang6School of Ecology and Environment, Southwest Forestry University, Kunming 650224, ChinaSchool of Ecology and Environment, Southwest Forestry University, Kunming 650224, ChinaSchool of Ecology and Environment, Southwest Forestry University, Kunming 650224, ChinaSchool of Ecology and Environment, Southwest Forestry University, Kunming 650224, ChinaSchool of Ecology and Environment, Southwest Forestry University, Kunming 650224, ChinaSchool of Ecology and Environment, Southwest Forestry University, Kunming 650224, ChinaForestry and Grassland Service in Luquan Yi and Miao Autonomous County, Luquan, Yunnan 651500, China[Objective] To study the characteristics of changes in chemical properties and diversity and structural composition of soil microbial communities in Pinus yun-nanensis soils on the Central Yunnan Plateau under nitrogen deposition, and to analyze the correlation between soil microorganisms and soil chemical properties, in order to provide a scientific basis for understanding the trend of changes in nutrient cycling in forest soil ecosystems under nitrogen deposition and observing soil microbiological changes. [Method] The soil of P. yunnanensis forests on the Central Yunnan Plateau was selected as the research object, CO(NH2)2 was used as the N source, and four different gradients were set up for simulated N deposition experiments, including control CK [N 0 g/(m2·a)], low nitrogen LN [N 10 g/(m2·a)], medium nitrogen MN [N 20 g/(m2·a)], and high nitrogen HN [N 25 g/(m2·a)], the structure and diversity of soil bacterial and fungal community were analyzed, and the characteristics of the changes of soil pH, TOC, TN, TP, NH+4-N and NO-3-N were determined. [Results] (1) In both the dry and rainy seasons, soil pH and TOC content were reduced, and TN was increased under each N treatment when compared with CK, and both NH+4-N and NO-3-N were increased at MN and HN compared to CK; (2) Both bacterial and fungal α-diversity were higher in the rainy season than in the dry season; bacterial α-diversity increased at LN under both seasons compared to CK, whereas fungi α-diversity increased at LN in the dry season; (3) In both the dry and rainy seasons, the dominant bacterial phyla were Proteobacteria, Acidobacteria and Actinobacteria, and the dominant fungal phyla were Basidiomycota, Ascomycota and Mortierellomycota; (4) The dominant bacterial and fungal genera were significantly correlated with pH, TOC, TN and NH-3-N during the dry and wet seasons. [Conclusion] Nitrogen deposition can provide soil microorganisms with effective nutrients such as NH+4-N and NH-3-N, but soil acidification due to nitrogen deposition can reduce soil TOC content and affect the structure of soil microbial communities.http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240629central yunnan plateaupinus yunnanensissoil microorganismsnitrogen deposition |
| spellingShingle | SONG Chenggong WANG Keqin SONG Yali LI Xiaodong ZHANG Jiguo LI Yun DENG Qiujiang Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau Shuitu Baochi Xuebao central yunnan plateau pinus yunnanensis soil microorganisms nitrogen deposition |
| title | Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau |
| title_full | Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau |
| title_fullStr | Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau |
| title_full_unstemmed | Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau |
| title_short | Response of Microbial Community Structure and Diversity to Nitrogen Deposition in Soils of Pinus yunnanensis Forest of the Central Yunnan Plateau |
| title_sort | response of microbial community structure and diversity to nitrogen deposition in soils of pinus yunnanensis forest of the central yunnan plateau |
| topic | central yunnan plateau pinus yunnanensis soil microorganisms nitrogen deposition |
| url | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20240629 |
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