Soil pH Modulates the Global Stabilized Soil Organic Carbon
文献类型：期刊论文
| 作者 | Liao, Cuijuan8,9; Yu, Mengxiao7; Wang, Ying-Ping6; Ciais, Philippe5; Abramoff, Rose Z.4; Feng, Wenting3; Goll, Daniel S.5; Zhang, Yuxin8,9; Chio, Manseng2; Liu, Fayong8,9 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2026-04-10 |
| 卷号 | 32期号:4页码:e70850 |
| 关键词 | carbon cycle Fe/Al (hydr)oxides mineral-associated organic carbon reactive minerals soil organic carbon soil pH |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.70850 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Soil mineral-associated organic carbon (MAOC) constitutes over 50% of total soil organic carbon (SOC) and serves as a key determinant of its long-term stabilization. Although soil pH is recognized as a master variable in biogeochemical cycles, it remains unclear how soil pH influences MAOC and SOC at large spatial scales. To address this knowledge gap, we conducted a continental-scale survey in China and synthesized global observations from literature, totaling 1300 independent observations. We analyzed the relationships between SOC and MAOC across pH gradients and assessed the contributions of other environmental factors to MAOC variability. Our results showed that higher SOC content is generally positively correlated with higher MAOC. However, this relationship is strongly influenced by soil mineralogy, texture, and climatic conditions. We identified distinct pH-dependent pathways controlling MAOC formation. In acidic soils (pH <= 5.5), Fe/Al (hydr)oxides explain most of the variation in MAOC content and in MAOC fraction (the ratio of MAOC to SOC). In neutral-to-alkaline soils (pH > 6.5), however, clay content and mean annual temperature emerge as the primary regulators. Net primary productivity (NPP) augments the particulate organic carbon (POC) pool, thereby diluting the MAOC fraction. This divergence challenges the universal applicability of clay-centric SOC models in acidic soils. Our findings provide a conceptual framework for biogeochemical models, urging the integration of pH-dependent metal oxide dynamics to improve predictions of SOC persistence under diverse future scenarios. |
| URL标识 | 查看原文 |
| WOS关键词 | IRON-OXIDES ; PHYSICAL-PROPERTIES ; SURFACE-AREA ; MATTER ; CLAY ; CALCIUM ; CLIMATE ; ASSOCIATIONS ; PERSISTENCE ; FRACTIONS |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001737777200001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221593]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Yu, Mengxiao; Huang, Yuanyuan |
| 作者单位 | 1.China Three Gorges Univ, Coll Hydraul & Environm Engn, Yichang, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Forage Breeding by Design & Utilizat, Key Lab Vegetat & Environm Change, Beijing, Peoples R China; 3.Beijing Forestry Univ, Sch Grassland Sci, Beijing, Peoples R China; 4.Univ Maine, Sch Forest Resources, Orono, ME, USA; 5.Univ Paris Saclay, Lab Sci Climat & Environm, IPSL, CEA,CNRS,UVSQ, Gif Sur Yvette, France; 6.CSIRO Environm, Clayton South, Vic, Australia; 7.Chinese Acad Sci, South China Bot Garden, Guangzhou, Peoples R China; 8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing, Peoples R China; 9.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liao, Cuijuan,Yu, Mengxiao,Wang, Ying-Ping,et al. Soil pH Modulates the Global Stabilized Soil Organic Carbon[J]. GLOBAL CHANGE BIOLOGY,2026,32(4):e70850. |
| APA | Liao, Cuijuan.,Yu, Mengxiao.,Wang, Ying-Ping.,Ciais, Philippe.,Abramoff, Rose Z..,...&Huang, Yuanyuan.(2026).Soil pH Modulates the Global Stabilized Soil Organic Carbon.GLOBAL CHANGE BIOLOGY,32(4),e70850. |
| MLA | Liao, Cuijuan,et al."Soil pH Modulates the Global Stabilized Soil Organic Carbon".GLOBAL CHANGE BIOLOGY 32.4(2026):e70850. |
入库方式： OAI收割
来源：地理科学与资源研究所
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