Plant litter traits control the accumulation of mineral-associated organic carbon by influencing its molecular composition and diversity
文献类型：期刊论文
| 作者 | Dai, Weijie1,3; Xiao, Rongbo2; Wei, Chaoyang1; Yang, Fen1 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 253页码:106667 |
| 关键词 | Structural compounds Mineral-associated organic carbon Microbial necromass carbon Molecular composition |
| ISSN号 | 0167-1987 |
| DOI | 10.1016/j.still.2025.106667 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Plant litter inputs represent an important approach for mineral-associated organic carbon (MAOC) accumulation critical for the long-term stability of soil organic carbon (SOC). However, a knowledge gap exists regarding how different contents of structural compounds in plant litters influence MAOC accumulation, as well as its molecular composition and diversity. In this study, wheat straw (Triticum aestivum L.), tree branch and leaves (Platanusxacerifolia) were employed as representative plant litters from forest and farmland ecosystems for an indoor experiment. We determined the dynamic changes of MAOC accumulation, as well as its organic functional groups, molecular composition and diversity through Fourier transform infrared spectroscopy (FTIR) and pyrolysis gas chromatography-mass spectrometry (py-GCMS). Compared with control (CK), the three plant litter types enhanced MAOC (0.90-2.09 times) accumulation, showing maximum increases in leaf litter and minimum in branch litter. FTIR indicated that MAOC was dominated by labile polysaccharide C-O functional groups, which explained the gradual decomposition of MAOC during incubation. Py-GCMS revealed that MAOC was formed via soil minerals selectively adsorbing organic molecules from plant litters i.e. ex vivo pathway. The molecular diversity of MAOC significantly increased after adding straw and leaves, which was beneficial to MAOC accumulation. This study provides a molecular perspective on the mechanisms for the formation of stable SOC pools. |
| URL标识 | 查看原文 |
| WOS关键词 | SOIL ; MATTER |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001500161700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214573]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Yang, Fen |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 2.Guangdong Univ Technol, Guangdong Ind Contaminated Site Remediat Technol &, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Weijie,Xiao, Rongbo,Wei, Chaoyang,et al. Plant litter traits control the accumulation of mineral-associated organic carbon by influencing its molecular composition and diversity[J]. SOIL & TILLAGE RESEARCH,2025,253:106667. |
| APA | Dai, Weijie,Xiao, Rongbo,Wei, Chaoyang,&Yang, Fen.(2025).Plant litter traits control the accumulation of mineral-associated organic carbon by influencing its molecular composition and diversity.SOIL & TILLAGE RESEARCH,253,106667. |
| MLA | Dai, Weijie,et al."Plant litter traits control the accumulation of mineral-associated organic carbon by influencing its molecular composition and diversity".SOIL & TILLAGE RESEARCH 253(2025):106667. |
入库方式： OAI收割
来源：地理科学与资源研究所
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