Climate warming alters subsoil but not topsoil carbon dynamics in alpine grassland
文献类型：期刊论文
| 作者 | Jia, Juan8; Cao, Zhenjiao8; Liu, Chengzhu8; Zhang, Zhenhua7; Lin, Li; Wang, Yiyun8; Haghipour, Negar12; Wacker, Lukas4; Bao, Hongyan3; Dittmar, Thorston2 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 25期号:12页码:4383-4393 |
| 关键词 | deep soil lignin decomposition physical fraction radiocarbon soil organic carbon warming |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.14823 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| 学科主题 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1365-2486 |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000491594700001 |
| 出版者 | WILEY |
| 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] |
| 源URL | [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.Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm, Res Grp Marine Geochem, Oldenburg, Germany 2.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China 3.Swiss Fed Inst Technol, Lab Ion Beam Phys, Dept Phys, Zurich, Switzerland 4.Swiss Fed Inst Technol, Geol Inst, Zurich, Switzerland 5.Simpson, Myrna J.] Univ Toronto Scarborough, Environm NMR Ctr, Dept Phys & Environm Sci, Toronto, ON, Canada 6.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Qinghai, Peoples R China 7.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 8.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 9.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou, Gansu, Peoples R China 10.Crowther, Thomas W.] Swiss Fed Inst Technol, Inst Integrat Biol, Zurich, Switzerland |
| 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. |
入库方式： OAI收割
来源：植物研究所
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