Distinct mechanisms of soil organic carbon formation in natural and legume-based grasslands on the Loess Plateau, China
文献类型：期刊论文
| 作者 | Yuan, Zi-Qiang2; Fang, Chao3; Ma, Tian4; Pei, Jiu-Ying2; Song, Xin5; Yao, Guang-Qian2; Sardans, Jordi5,6; Penuelas, Josep5,6; Fang, Xiang-Wen2; Li, Feng-Min1 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 211页码:11 |
| 关键词 | Lignin phenols Amino sugars Legume forage Grassland restoration Carbon sequestration |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2025.109978 |
| 通讯作者 | Yuan, Zi-Qiang(yuanzq@lzu.edu.cn) ; Fang, Xiang-Wen(fangxw@lzu.edu.cn) |
| 英文摘要 | The conversion of degraded land into grassland, through either abandonment or the introduction of legumes, is recognized as an effective strategy for increasing soil organic carbon (SOC). However, the impacts of this land use change on plant-derived lignin phenol and microbial residue carbon (MRC) remain insufficiently understood. In this study, we investigated the effects of grassland development following cropland abandonment and legume establishment on these SOC sources. We analysed 30 abandoned-cropland grasslands (CGs) and 30 alfalfaestablished grasslands (AGs) with revegetation ages ranging from 1 to 30 years located in the semiarid region of the Loess Plateau, China. Our findings revealed that CGs exhibited a linear increase in lignin phenol content and its contribution to SOC (from 7.2 to 12.5 mg g- 1 SOC); however, there was no corresponding increase in MRC. In contrast, AGs demonstrated increases in both lignin phenol and MRC contents, along with their contributions to SOC (from 4.8 to 11.8 mg g- 1 SOC and from 32.8 % to 44.4 % SOC, respectively). Enzymatic stoichiometry analysis indicated that both grassland establishment alleviated microbial carbon limitation; nevertheless, microbial nitrogen limitation persisted, with its intensity remaining unrelated to the duration of grassland establishment. Soil exchangeable magnesium and root biomass primarily influenced the lignin phenol contribution to SOC, whereas soil dissolved organic carbon and microbial biomass carbon mainly affected the MRC contribution across both grassland types. These results underscore the distinct mechanisms of SOC formation and regulation in natural and legume-based grasslands. To enhance soil carbon sequestration in this and comparable dryland regions, priority should be given to the introduction of leguminous plants and the alleviation of microbial nitrogen limitation, thereby increasing plant carbon inputs and improving microbial conversion efficiency. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001582522400001 |
| 资助机构 | National Natural Science Foundation of China ; Spanish Government |
| 源URL | [http://ir.yic.ac.cn/handle/133337/41404]  |
| 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 | Yuan, Zi-Qiang; Fang, Xiang-Wen |
| 作者单位 | 1.Nanjing Agr Univ, Coll Agr, Nanjing 210095, Peoples R China 2.Lanzhou Univ, Coll Ecol, State Key Lab Herbage Improvement & Grassland Agro, Lanzhou 730000, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Sch Ecol & Appl Meteorol, Key Lab Ecosyst Carbon Source & Sink, China Meteorol Adm ECSS CMA, Nanjing 210044, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China 5.CREAF, Barcelona, Catalonia, Spain 6.UAB, CSIC, CREAF, Global Ecol Unit, Barcelona, Catalonia, Spain |
| 推荐引用方式 GB/T 7714 | Yuan, Zi-Qiang,Fang, Chao,Ma, Tian,et al. Distinct mechanisms of soil organic carbon formation in natural and legume-based grasslands on the Loess Plateau, China[J]. SOIL BIOLOGY & BIOCHEMISTRY,2025,211:11. |
| APA | Yuan, Zi-Qiang.,Fang, Chao.,Ma, Tian.,Pei, Jiu-Ying.,Song, Xin.,...&Li, Feng-Min.(2025).Distinct mechanisms of soil organic carbon formation in natural and legume-based grasslands on the Loess Plateau, China.SOIL BIOLOGY & BIOCHEMISTRY,211,11. |
| MLA | Yuan, Zi-Qiang,et al."Distinct mechanisms of soil organic carbon formation in natural and legume-based grasslands on the Loess Plateau, China".SOIL BIOLOGY & BIOCHEMISTRY 211(2025):11. |
入库方式： OAI收割
来源：烟台海岸带研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。