Carbon saturation level regulates the stability of mineral-associated organic carbon in forest soils
文献类型：期刊论文
| 作者 | Liu, Yuedong1,3; Huang, Yanan2; Ndzelu, Batande Sinovuyo1; Hou, Ruixing3 |
| 刊名 | CATENA
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 259页码:109391 |
| 关键词 | Mineral-associated organic carbon Stability Carbon saturation level Mineral composition |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2025.109391 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The stability of mineral-associated organic carbon (MAOC) serves as a critical determinant of long-term soil organic carbon (SOC) preservation, predominantly governed by mineral-organic binding interactions. However, the regulatory mechanisms of mineral composition and initial carbon saturation level (CSL) on MAOC stability remain poorly understood. In this study, we selected six forest soils from three climatic zones in China, and simulated microbial oxidative degradation using hydrogen peroxide (H2O2) to investigate MAOC chemical stability. The results showed that MAOC contributed 40.84-86.93% of SOC, with spatial variation influenced by the illite content and specific surface area. The remaining MAOC (r-MAOC) after treatment accounted for 25.32-86.66% of MAOC and the oxidation-resistant efficiency was significantly correlated with CSL and clay content. During oxidation MAOC preferentially lost a high proportion of plant-derived organic carbon with relatively weak binding to the mineral surfaces like hydroxyl carbon (1.43-22.10%), while microbial-derived polysaccharide carbon significantly increased by 0.48-19.64%. Under unsaturated conditions, higher CSL levels corresponds with increased MAOC stability, implying that organic matter preferentially binds to and stabilizes on vacant mineral sites. The partial least squares path model (PLS-PM) and random forest model (RFM) analysis indicated that CSL and mineral composition were key determinants of MAOC stability (0.79 and 0.41). This study provides theoretical insights into predicting forest soil carbon stability and contributes to improving global carbon cycle modeling by refining MAOC dynamics. |
| URL标识 | 查看原文 |
| WOS关键词 | CLAY-MINERALS ; MATTER ; STABILIZATION ; MECHANISMS ; FRACTIONATION ; PRESERVATION ; PROTECTION ; PARTICLES ; TURNOVER ; STOCKS |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001561408100001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/216138]  |
| 专题 | 禹城站农业生态系统研究中心_外文论文 |
| 通讯作者 | Hou, Ruixing |
| 作者单位 | 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China; 2.Sun Yat Sen Univ, Sch Agr & Biotechnol, Shenzhen Campus, Shenzhen 518107, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, Yuedong,Huang, Yanan,Ndzelu, Batande Sinovuyo,et al. Carbon saturation level regulates the stability of mineral-associated organic carbon in forest soils[J]. CATENA,2025,259:109391. |
| APA | Liu, Yuedong,Huang, Yanan,Ndzelu, Batande Sinovuyo,&Hou, Ruixing.(2025).Carbon saturation level regulates the stability of mineral-associated organic carbon in forest soils.CATENA,259,109391. |
| MLA | Liu, Yuedong,et al."Carbon saturation level regulates the stability of mineral-associated organic carbon in forest soils".CATENA 259(2025):109391. |
入库方式： OAI收割
来源：地理科学与资源研究所
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