Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grasses
Abstract Determining the effect of perennial energy crop (PEC) cultivation on soil organic carbon (SOC) in marginal land soil is vital for carbon neutrality and bioeconomy development. However, a comprehensive and systematic evaluation of the response of SOC content to different PECs and its underly...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-02-01
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| Series: | GCB Bioenergy |
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| Online Access: | https://doi.org/10.1111/gcbb.13019 |
| _version_ | 1797957054787223552 |
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| author | Wei Hou Yi Xu Shuai Xue Jie Li Yang Yang Zili Yi Tongcheng Fu |
| author_facet | Wei Hou Yi Xu Shuai Xue Jie Li Yang Yang Zili Yi Tongcheng Fu |
| author_sort | Wei Hou |
| collection | DOAJ |
| description | Abstract Determining the effect of perennial energy crop (PEC) cultivation on soil organic carbon (SOC) in marginal land soil is vital for carbon neutrality and bioeconomy development. However, a comprehensive and systematic evaluation of the response of SOC content to different PECs and its underlying drivers is still lacking. We used soil data collected from infertile red topsoil (0–20 cm) after 10 years of cultivation with Miscanthus (MS), Panicum virgatum (SG), and Saccharum arundinaceum (SA) to explore the changes in SOC stock induced by PEC. The roles of physical, chemical, and microbiological factors driving the increase in the SOC stock were investigated. Results revealed that SA and MS enhanced SOC stock by 87.97% and 27.52% relative to the uncultivated control. Conversely, PEC increased the percentage of soil mega‐aggregates, geometric mean diameters, soil chelate iron (Fe), and aluminum (Al) oxides, and reduced soil acidity for the infertile red soils. In addition, fungal richness and diversity for PEC soils were enhanced compared to the unplanted soil. It is possible that PEC cultivation reduced the relative abundance of copiotrophic fungi but increased the relative abundance of oligotrophic fungi. Furthermore, variance partitioning analysis revealed that chemical and microbiological factors accounted for 80.54% of the total variation for the SOC stock. The partial least squares path model showed that PEC cultivation enhanced soil carbon (C) stock via soil deacidification and increased soil bacterial function. In conclusion, this study confirms the SOC sequestration potential of PEC cultivation in marginal land and the underlying mechanism driving SOC stock. The main positive factors controlling soil C sequestration included “pH,” while the negative factors were “bacterial community,” “fungal community,” and “bacterial function.” Our research may help encourage and support decision‐makers of wasted marginal land conversion to PEC cultivation. |
| first_indexed | 2024-04-10T23:58:19Z |
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| id | doaj.art-e0ee8bf568f445c39b9b1b3d3d4b0334 |
| institution | Directory Open Access Journal |
| issn | 1757-1693 1757-1707 |
| language | English |
| last_indexed | 2024-04-10T23:58:19Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
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| series | GCB Bioenergy |
| spelling | doaj.art-e0ee8bf568f445c39b9b1b3d3d4b03342023-01-10T10:19:36ZengWileyGCB Bioenergy1757-16931757-17072023-02-0115223925310.1111/gcbb.13019Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grassesWei Hou0Yi Xu1Shuai Xue2Jie Li3Yang Yang4Zili Yi5Tongcheng Fu6College of Bioscience and Biotechnology Hunan Agricultural University Changsha ChinaCollege of Agronomy and Biotechnology China Agricultural University Beijing ChinaCollege of Bioscience and Biotechnology Hunan Agricultural University Changsha ChinaCollege of Bioscience and Biotechnology Hunan Agricultural University Changsha ChinaSolid Wastes and Chemicals Management Center, Ministry of Ecology and Environment Beijing ChinaCollege of Bioscience and Biotechnology Hunan Agricultural University Changsha ChinaCollege of Bioscience and Biotechnology Hunan Agricultural University Changsha ChinaAbstract Determining the effect of perennial energy crop (PEC) cultivation on soil organic carbon (SOC) in marginal land soil is vital for carbon neutrality and bioeconomy development. However, a comprehensive and systematic evaluation of the response of SOC content to different PECs and its underlying drivers is still lacking. We used soil data collected from infertile red topsoil (0–20 cm) after 10 years of cultivation with Miscanthus (MS), Panicum virgatum (SG), and Saccharum arundinaceum (SA) to explore the changes in SOC stock induced by PEC. The roles of physical, chemical, and microbiological factors driving the increase in the SOC stock were investigated. Results revealed that SA and MS enhanced SOC stock by 87.97% and 27.52% relative to the uncultivated control. Conversely, PEC increased the percentage of soil mega‐aggregates, geometric mean diameters, soil chelate iron (Fe), and aluminum (Al) oxides, and reduced soil acidity for the infertile red soils. In addition, fungal richness and diversity for PEC soils were enhanced compared to the unplanted soil. It is possible that PEC cultivation reduced the relative abundance of copiotrophic fungi but increased the relative abundance of oligotrophic fungi. Furthermore, variance partitioning analysis revealed that chemical and microbiological factors accounted for 80.54% of the total variation for the SOC stock. The partial least squares path model showed that PEC cultivation enhanced soil carbon (C) stock via soil deacidification and increased soil bacterial function. In conclusion, this study confirms the SOC sequestration potential of PEC cultivation in marginal land and the underlying mechanism driving SOC stock. The main positive factors controlling soil C sequestration included “pH,” while the negative factors were “bacterial community,” “fungal community,” and “bacterial function.” Our research may help encourage and support decision‐makers of wasted marginal land conversion to PEC cultivation.https://doi.org/10.1111/gcbb.13019marginal landsoil aggregatesoil carbon sequestrationsoil ecologysoil iron and aluminum oxidesoil microbe |
| spellingShingle | Wei Hou Yi Xu Shuai Xue Jie Li Yang Yang Zili Yi Tongcheng Fu Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grasses GCB Bioenergy marginal land soil aggregate soil carbon sequestration soil ecology soil iron and aluminum oxide soil microbe |
| title | Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grasses |
| title_full | Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grasses |
| title_fullStr | Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grasses |
| title_full_unstemmed | Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grasses |
| title_short | Effects of soil physics, chemistry, and microbiology on soil carbon sequestration in infertile red soils after long‐term cultivation of perennial grasses |
| title_sort | effects of soil physics chemistry and microbiology on soil carbon sequestration in infertile red soils after long term cultivation of perennial grasses |
| topic | marginal land soil aggregate soil carbon sequestration soil ecology soil iron and aluminum oxide soil microbe |
| url | https://doi.org/10.1111/gcbb.13019 |
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