Depth-dependent responses of soil organic carbon fractions to three-year warming in subtropical forests
文献类型：期刊论文
| 作者 | Zhou, Jiacong7,8,9; Yang, Zhijie7,8; Liu, Ji1,9,10; Zhang, Qiufang7,8; Liu, Xiaofei7,8; Chen, Shidong7,8; Xiong, Decheng7,8; Xu, Chao7,8; Zheng, Yong6,7,8; Zheng, Wei5,7,8 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 464页码:117631 |
| 关键词 | Soil warming Labile organic carbon Recalcitrant organic carbon Soil depth Subtropical forest Heating cable |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2025.117631 |
| 产权排序 | 7 |
| 文献子类 | Article |
| 英文摘要 | Climate warming can significantly alter soil organic carbon (SOC) dynamics, thereby influencing the feedbacks between SOC and climate change. However, how different fractions of SOC respond to warming, how their responses vary across soil depths, and the underlying mechanisms remain poorly understood in subtropical forest ecosystems. We conducted a three-year in situ soil warming experiment (+4 degrees C) in a Cunninghamia lanceolata plantation using buried resistance cables to investigate how labile and recalcitrant organic C (LOC and ROC, respectively) of topsoil (0-20 cm) and subsoil (20-60 cm) respond to warming. We found that warming significantly reduced LOC content by 19 % in the topsoil, accompanied by enhanced activities of C-degrading hydrolytic enzymes (mainly due to the increase in beta-glucosidase activity) and a shift in microbial community structure toward more oligotrophic groups (i.e., higher Gram-positive to Gram-negative bacterial biomass ratio). In contrast, LOC in the subsoil remained unchanged, likely due to increased LOC input from fine root biomass, compensating for decomposition losses. Unlike LOC, ROC content was not affected by warming, indicating its stability under short-term warming. These findings highlight the depth-dependent sensitivity of different SOC fractions to warming, shaped by C-cycling enzyme activities, microbial community structure, and plant fine root biomass, and thereby help address the knowledge gap on the responses and mechanisms of warming on SOC from an important but data-poor region. |
| URL标识 | 查看原文 |
| WOS关键词 | MICROBIAL COMMUNITY STRUCTURE ; EXTRACELLULAR ENZYME-ACTIVITY ; FATTY-ACID ANALYSIS ; TEMPERATURE SENSITIVITY ; NITROGEN POOLS ; CLIMATE ; DECOMPOSITION ; BACTERIAL ; BIOMASS ; MATTER |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001633536700002 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219388]  |
| 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 | Yang, Zhijie |
| 作者单位 | 1.CREAF, Catalonia 08913, Spain; 2.Natl Taiwan Normal Univ, Dept Life Sci, Taipei 11677, Taiwan 3.Tennessee State Univ, Dept Agr & Environm Sci, Nashville, TN 37209 USA; 4.Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China; 5.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 6.Wuyi Univ, Coll Tourism, Wuyishan City 354300, Peoples R China; 7.Fujian Normal Univ, Sch Geog Sci, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou 350017, Peoples R China; 8.Fujian Normal Univ, Fujian Sanming Forest Ecosyst Natl Observat & Res, Sanming 350017, Peoples R China; 9.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess Sci, Xian 710061, Peoples R China; 10.UAB, Global Ecol Unit CREAF, CSIC, Catalonia 08913, Spain; |
| 推荐引用方式 GB/T 7714 | Zhou, Jiacong,Yang, Zhijie,Liu, Ji,et al. Depth-dependent responses of soil organic carbon fractions to three-year warming in subtropical forests[J]. GEODERMA,2025,464:117631. |
| APA | Zhou, Jiacong.,Yang, Zhijie.,Liu, Ji.,Zhang, Qiufang.,Liu, Xiaofei.,...&Yang, Yusheng.(2025).Depth-dependent responses of soil organic carbon fractions to three-year warming in subtropical forests.GEODERMA,464,117631. |
| MLA | Zhou, Jiacong,et al."Depth-dependent responses of soil organic carbon fractions to three-year warming in subtropical forests".GEODERMA 464(2025):117631. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。