Soil organic carbon becomes newer under warming at a permafrost site on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Chang, Ruiying; Liu, Shuguang2; Chen, Leiyi3; Li, Na4,5; Bing, Haijian; Wang, Tao; Chen, Xiaopeng6; Li, Yang; Wang, Genxu |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2021 |
| 卷号 | 152 |
| 关键词 | Amino sugars Delta C-14 Warming duration Permafrost Plant-derived carbon |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2020.108074 |
| 文献子类 | Article |
| 英文摘要 | Permafrost areas are experiencing fast and dramatic changes under global warming. Increased primary production and stimulated microbial activity have been widely observed in warming permafrost. However, the fate of permafrost soil organic carbon (SOC) remains elusive, and the potential mechanisms underlying warmingmediated SOC formation and old C decomposition are poorly understood. Here, using in situ six-year manipulative warming experiments with two scenarios (+2.4 degrees C and +4.9 degrees C for lower and higher scenarios, respectively, above the ambient temperature) at a permafrost site in the Tibetan Plateau, we observed that soil C sink increased in the surface 5 cm layer under the two warming scenarios. SOC exhibited a linear increase with warming duration at rates of 6.8% and 6.4% annually in the silt & clay fractions and aggregates, respectively. Warming-induced accumulations of SOC in the aggregates and silt & clay fractions were contributed mainly by plant-derived C and minorly by microbial necromass. However, the increased input of new plant-derived C was accompanied with an increasing loss of old C via enhanced respiration under warming, likely due to the mobilization and degradation of C in the aggregates and silt & clay fractions. Our study provides field-based evidence of the enhanced SOC accumulation in the Tibetan permafrost regions under warming, and improves process-based understanding of warming-induced new plant-derived C that could replace the protected old C in the aggregates and silt & clay fractions. |
| 学科主题 | Soil Science |
| 出版地 | OXFORD |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000595644500013 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key Research and Development Program of China [2016YFC0502105] ; National Natural Science Foundation of China [41671206] ; Youth Innovation Promotion Association CAS, China [2018406, 2017424] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26644]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Shanxi Agr Univ, Coll Anim Sci & Vet Technol, Taigu 030801, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, Peoples R China 3.Cent South Univ Forestry & Technol, Natl Engn Lab Appl Technol Forestry & Ecol Southe, Changsha 410004, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 5.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Chengdu 610041, Peoples R China 6.Chinese Acad Sci, Chengdu Inst Biol, Ecol Restorat & Biodivers Conservat Key Lab Sichu, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Ruiying,Liu, Shuguang,Chen, Leiyi,et al. Soil organic carbon becomes newer under warming at a permafrost site on the Tibetan Plateau[J]. SOIL BIOLOGY & BIOCHEMISTRY,2021,152. |
| APA | Chang, Ruiying.,Liu, Shuguang.,Chen, Leiyi.,Li, Na.,Bing, Haijian.,...&Wang, Genxu.(2021).Soil organic carbon becomes newer under warming at a permafrost site on the Tibetan Plateau.SOIL BIOLOGY & BIOCHEMISTRY,152. |
| MLA | Chang, Ruiying,et al."Soil organic carbon becomes newer under warming at a permafrost site on the Tibetan Plateau".SOIL BIOLOGY & BIOCHEMISTRY 152(2021). |
入库方式： OAI收割
来源：植物研究所
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。