Physical rather than chemical protection determines soil organic carbon accumulation in a subtropical Chinese fir plantation treated by litter manipulation
文献类型：期刊论文
| 作者 | Liu, Qiao4,5; Liu, Xiangjiang4,5; Liao, Zhigao4,5; Wang, Shengnan4,5; Huang, Junjie4,5; Luo, Yiqi3; Jiang, Lifen3; Wang, Geoff G.2; Wang, Huiming1; Chen, Fu-Sheng4,5 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2025-01-20 |
| 页码 | 15 |
| 关键词 | Soil organic carbon Aggregate protection Chemical stability Microbial necromass carbon Litter manipulation Soil profile |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-025-07219-7 |
| 通讯作者 | Chen, Fu-Sheng(chenfusheng@jxau.edu.cn) |
| 英文摘要 | Background and aim Soil organic carbon (SOC) is crucial for soil fertility and combating climate change, which may be regulated by aboveground litter input. However, how SOC accumulation responds to litter manipulation remains unclear. Methods In this study, we conducted a 7-year litter manipulation experiment, including litter addition, litter removal, and control treatments. We used an elemental analyzer, along with measurements of bulk density, to estimate SOC stock, the wet-sieving method to analyze soil aggregate distribution, amino sugar content to calculate microbial necromass carbon (C) in aggregates, and a Fourier transform midinfrared spectrometer (FIRT) to determine the SOC chemical functional groups along a 60 cm profile in a Chinese fir (Cunninghamia lanceolata) plantation. Results We found that litter addition significantly increased SOC stock by 44.59% in the 0-10 cm layer, while litter removal had no effect on SOC stock. Litter addition increased the proportion of macroaggregates (> 2 mm) and the geometric mean diameter (GMD). Moreover, litter addition increased the bacterial necromass C in macroaggregates, which was positively correlated with SOC. SOC stock in topsoil was explained by GMD and fractal dimension, which might increase the protection for bacterial necromass C. However, litter addition decreased the chemical stability of SOC. Conclusion Long-term C input increased topsoil SOC accumulation by strengthening the physical protection of aggregates rather than by the chemical protection of SOC functional groups in this Chinese fir plantation, particularly through the accumulation of bacterial necromass C in macroaggregates. |
| WOS关键词 | ENZYME-ACTIVITIES ; MATTER ; DYNAMICS ; INPUT ; ROOT ; CO2 ; SEQUESTRATION ; DECOMPOSITION ; RESPIRATION ; MECHANISMS |
| 资助项目 | National Natural Science Foundation of China[32471851] ; National Natural Science Foundation of China[32171759] ; Double Thousand Plan of Jiangxi Province[jxsq2023201058] ; Natural Science Foundation of Jiangxi Province[20242BAB20300] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001401952900001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; Double Thousand Plan of Jiangxi Province ; Natural Science Foundation of Jiangxi Province |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/212834]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Chen, Fu-Sheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Stn, Beijing 100101, Peoples R China 2.Clemson Univ, Dept Forestry & Environm Conservat, Clemson, SC 29634 USA 3.Cornell Univ, Sch Integrat Plant Sci, Ithaca, NY 14850 USA 4.Jiangxi Agr Univ, Key Lab Natl Forestry, Grassland Adm Forest Ecosyst Protect & Restorat Po, Nanchang 330045, Peoples R China 5.Jiangxi Agr Univ, Coll Forestry, Jiangxi Prov Key Lab Subtrop Forest Resource Culti, Nanchang 330045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qiao,Liu, Xiangjiang,Liao, Zhigao,et al. Physical rather than chemical protection determines soil organic carbon accumulation in a subtropical Chinese fir plantation treated by litter manipulation[J]. PLANT AND SOIL,2025:15. |
| APA | Liu, Qiao.,Liu, Xiangjiang.,Liao, Zhigao.,Wang, Shengnan.,Huang, Junjie.,...&Chen, Fu-Sheng.(2025).Physical rather than chemical protection determines soil organic carbon accumulation in a subtropical Chinese fir plantation treated by litter manipulation.PLANT AND SOIL,15. |
| MLA | Liu, Qiao,et al."Physical rather than chemical protection determines soil organic carbon accumulation in a subtropical Chinese fir plantation treated by litter manipulation".PLANT AND SOIL (2025):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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