Inundation depth modulates wetland soil organic carbon stability by altering microbial biomass and mineral protection
文献类型：期刊论文
| 作者 | Zhao, Mingliang4,5; Wang, Lianjing3; Xiao, Leilei4,5; Ma, Tian4,5; Li, Yuan4,5; Paytan, Adina2; Lichtfouse, Eric1; Song, Weimin4,5; Wang, Xiaojie4,5; Chu, Xiaojing4,5 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2026-05-01 |
| 卷号 | 469页码:12 |
| 关键词 | Carbon sequestration Microbial necromass Mineral property Hydrological regime Yellow River Delta |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2026.117798 |
| 通讯作者 | Han, Guangxuan(gxhan@yic.ac.cn) |
| 英文摘要 | Wetlands are essential carbon (C) reservoirs, crucial for climate change mitigation, but their hydrological regimes are increasingly threatened by climate change. Inundation depth, a key hydrological factor in wetlands, influences Soil Organic Carbon (SOC) storage and stability, yet its effects on SOC fractions and stability, especially in subsoils, remain critically underexplored. This study investigated the impact of inundation depth on SOC in the topsoil (0-20 cm) and subsoil (20-40 cm) over a 6-year field experiment. As the inundation depth increased from 0 cm to 40 cm, SOC content increased significantly by 62% in the topsoil and by 222% in the subsoil. Particulate Organic C (POC) and Mineral-Associated Organic C (MAOC) responded differently across soil layers, with topsoil POC driven by plant inputs and MAOC by microbial turnover, while subsoil POC and MAOC were influenced by nutrient availability and mineral protection, respectively. Inundation depth increased the subsoil SOC stability but did not affect topsoil stability, where key mineral protection capacity (i.e., clay and free/amorphous Fe/Al oxides) remained unaltered. In the subsoil, both microbial biomass and mineral protection jointly enhanced SOC stability. We identified 20 cm inundation depth as an operational benchmark where SOC accumulation reaches a saturation plateau. This suggests that, within hydrologically managed restoration settings in the Yellow River Delta, maintaining moderate inundation around this depth may help maximize SOC storage, whereas deeper inundation did not provide additional SOC gains. Collectively, these findings advance our mechanistic understanding of depth-dependent carbon dynamics and provide a practical reference for sitelevel hydrological regulation, although the applicability of this threshold to other wetlands requires further validation. |
| WOS关键词 | NITROGEN ; MATTER |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001742352700001 |
| 资助机构 | National Key Research and Development Program of China ; Natural Science Foundation of China |
| 源URL | [http://ir.yic.ac.cn/handle/133337/42396]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Han, Guangxuan |
| 作者单位 | 1.Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China 2.Univ Calif Santa Cruz, Inst Marine Sci, Santa Cruz, CA USA 3.Fudan Univ, State Key Lab Wetland Conservat & Restorat,Minist, Natl Observat & Res Stn Wetland Ecosyst Yangtze Es, Key Lab Biodivers Sci & Ecol Engn,Sch Life Sci,Min, Shanghai 200438, Peoples R China 4.Chinese Acad Sci, Yellow River Delta Field Observat & Res Stn Coasta, Dongying 257500, Shandong, Peoples R China 5.Chinese Acad Sci, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Mingliang,Wang, Lianjing,Xiao, Leilei,et al. Inundation depth modulates wetland soil organic carbon stability by altering microbial biomass and mineral protection[J]. GEODERMA,2026,469:12. |
| APA | Zhao, Mingliang.,Wang, Lianjing.,Xiao, Leilei.,Ma, Tian.,Li, Yuan.,...&Han, Guangxuan.(2026).Inundation depth modulates wetland soil organic carbon stability by altering microbial biomass and mineral protection.GEODERMA,469,12. |
| MLA | Zhao, Mingliang,et al."Inundation depth modulates wetland soil organic carbon stability by altering microbial biomass and mineral protection".GEODERMA 469(2026):12. |
入库方式： OAI收割
来源：烟台海岸带研究所
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