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| Climate warming alters subsoil but not topsoil carbon dynamics in alpine grassland | |
Jia, Juan1; Cao, Zhenjiao1; Liu, Chengzhu1; Zhang, Zhenhua2; Lin, Li; Wang, Yiyun1; Haghipour, Negar4; Wacker, Lukas5; Bao, Hongyan6; Dittmar, Thorston7; Simpson, Myrna J.; Yang, Huan9; Crowther, Thomas W.; Eglinton, Timothy, I4; He, Jin-Sheng; Feng, Xiaojuan1
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| 2019 | |
| 发表期刊 | GLOBAL CHANGE BIOLOGY
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| ISSN | 1354-1013 |
| 卷号 | 25期号:12页码:4383-4393 |
| 摘要 | Subsoil contains more than half of soil organic carbon (SOC) globally and is conventionally assumed to be relatively unresponsive to warming compared to the topsoil. Here, we show substantial changes in carbon allocation and dynamics of the subsoil but not topsoil in the Qinghai-Tibetan alpine grasslands over 5 years of warming. Specifically, warming enhanced the accumulation of newly synthesized (C-14-enriched) carbon in the subsoil slow-cycling pool (silt-clay fraction) but promoted the decomposition of plant-derived lignin in the fast-cycling pool (macroaggregates). These changes mirrored an accumulation of lipids and sugars at the expense of lignin in the warmed bulk subsoil, likely associated with shortened soil freezing period and a deepening root system. As warming is accompanied by deepening roots in a wide range of ecosystems, root-driven accrual of slow-cycling pool may represent an important and overlooked mechanism for a potential long-term carbon sink at depth. Moreover, given the contrasting sensitivity of SOC dynamics at varied depths, warming studies focusing only on surface soils may vastly misrepresent shifts in ecosystem carbon storage under climate change. |
| 关键词 | deep soil lignin decomposition physical fraction radiocarbon soil organic carbon warming |
| 学科领域 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| DOI | 10.1111/gcb.14823 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | SOIL ORGANIC-MATTER ; ELEVATED CO2 ; SEQUESTRATION ; DECOMPOSITION ; TEMPERATURE ; NITROGEN ; MASS ; DEGRADATION ; SENSITIVITY ; BIOMARKERS |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:000491594700001 |
| 出版者 | WILEY |
| 文献子类 | Article |
| 出版地 | HOBOKEN |
| EISSN | 1365-2486 |
| 资助机构 | Chinese National Key Development Program for Basic Research [2015CB954201, 2017YFC0503902] ; International Partnership Program of Chinese Academy of Sciences [151111KYSB20160014] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370491, 31630009, 41422304, 41773067] |
| 作者邮箱 | jshe@pku.edu.cn ; xfeng@ibcas.ac.cn |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/19614 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Qinghai, Peoples R China 4.Peking Univ, Coll Urban & Environm Sci, Inst Ecol, Beijing, Peoples R China 5.Swiss Fed Inst Technol, Geol Inst, Zurich, Switzerland 6.Swiss Fed Inst Technol, Lab Ion Beam Phys, Dept Phys, Zurich, Switzerland 7.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China 8.Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm, Res Grp Marine Geochem, Oldenburg, Germany 9.Simpson, Myrna J.] Univ Toronto Scarborough, Environm NMR Ctr, Dept Phys & Environm Sci, Toronto, ON, Canada 10.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan, Hubei, Peoples R China 11.Crowther, Thomas W.] Swiss Fed Inst Technol, Inst Integrat Biol, Zurich, Switzerland 12.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Juan,Cao, Zhenjiao,Liu, Chengzhu,et al. Climate warming alters subsoil but not topsoil carbon dynamics in alpine grassland[J]. GLOBAL CHANGE BIOLOGY,2019,25(12):4383-4393. |
| APA | Jia, Juan.,Cao, Zhenjiao.,Liu, Chengzhu.,Zhang, Zhenhua.,Lin, Li.,...&Feng, Xiaojuan.(2019).Climate warming alters subsoil but not topsoil carbon dynamics in alpine grassland.GLOBAL CHANGE BIOLOGY,25(12),4383-4393. |
| MLA | Jia, Juan,et al."Climate warming alters subsoil but not topsoil carbon dynamics in alpine grassland".GLOBAL CHANGE BIOLOGY 25.12(2019):4383-4393. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Global Change Biolog（1409KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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