Shifts in the vegetation and microbial conditions accelerate soil organic carbon accumulation over a 65-year desert revegetation chronosequence
文献类型：期刊论文
| 作者 | Zhang, Ting5; Niu, Bin3,4; Wang, Yongli2; Wei, Zhifu5; Wang, Gen5; Ma, Xueyun5; Li, Xinrong1,5 |
| 刊名 | CATENA
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 258页码:109248 |
| 关键词 | Dryland ecosystems Revegetation SOC fractions Microbes Plant attributes Biocrust |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2025.109248 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Revegetation in drylands is not only an effective strategy for curbing and reversing land desertification but also an effective approach to mitigating global climate change due to its significant organic carbon (OC) sequestration potential. Despite considerable progress in enhancing soil organic carbon (SOC) through revegetation, the longterm stability of carbon storage in drylands and the mechanisms underlying OC stabilization remain unclear. Here, we used a 65-year revegetation chronosequence in the Tengger Desert and applied sequential chemical extraction to separate SOC into functionally distinct OC fractions. SOC content increased from 0.63 g/kg at 11 years to 7.9 g/kg at 65 years, with a marked acceleration after 34 years. This 34-year threshold was identified by segmented function and signals a shift in both accumulation rate and carbon fraction composition. Extractable OC fractions (e.g., weakly adsorbed OC, metal-OC complexes, carbonate-OC, Fe-oxyhydroxide-OC-OC) rose sharply from 1.8 g/kg at 34 years to 3.9 g/kg at 48 years, then plateaued. In contrast, residual OC increased steadily from 0.6 g/kg to 5.9 g/kg between 34 and 65 years, becoming dominant. The relative contribution of extractable OC to SOC declined from 84 % to 47 %, while residual OC increased from 16 % to 53 %. Microbial biomass (phospholipid fatty acids, PLFAs) and community composition (fungi-to-bacteria ratio) were strongly associated with extractable OC fractions. In contrast, residual OC was primarily influenced by plant attributes (herb cover, litter biomass) and biocrust cover. These findings indicate that distinct biotic and abiotic factors regulate different OC fractions, leading to divergent responses under long-term revegetation. Overall, long-term revegetation in drylands accelerates SOC accumulation and promotes the formation of more stable carbon pools, contributing to enhanced soil resilience and climate change mitigation. |
| URL标识 | 查看原文 |
| WOS关键词 | CLIMATE-CHANGE ; MATTER ; STABILIZATION ; FRACTIONATION ; DESERTIFICATION ; STOICHIOMETRY ; COMMUNITIES ; DIVERSITY ; PATTERNS ; RECOVERY |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001523753900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215356]  |
| 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 | Niu, Bin; Li, Xinrong |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, CAS Ctr Excellence Life & Paleoenvironment, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Sichuan Zoige Alpine Wetland Ecosyst Natl Observat, Beijing, Peoples R China; 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China; 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhang, Ting,Niu, Bin,Wang, Yongli,et al. Shifts in the vegetation and microbial conditions accelerate soil organic carbon accumulation over a 65-year desert revegetation chronosequence[J]. CATENA,2025,258:109248. |
| APA | Zhang, Ting.,Niu, Bin.,Wang, Yongli.,Wei, Zhifu.,Wang, Gen.,...&Li, Xinrong.(2025).Shifts in the vegetation and microbial conditions accelerate soil organic carbon accumulation over a 65-year desert revegetation chronosequence.CATENA,258,109248. |
| MLA | Zhang, Ting,et al."Shifts in the vegetation and microbial conditions accelerate soil organic carbon accumulation over a 65-year desert revegetation chronosequence".CATENA 258(2025):109248. |
入库方式： OAI收割
来源：地理科学与资源研究所
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