Dual controls on carbon loss during drought in peatlands
文献类型：期刊论文
| 作者 | Wang, Hongjun1; Richardson, Curtis J.; Ho, Mengchi |
| 刊名 | NATURE CLIMATE CHANGE
 |
| 出版日期 | 2015 |
| 卷号 | 5期号:6页码:584+ |
| ISSN号 | 1758-678X |
| DOI | 10.1038/nclimate2643 |
| 文献子类 | Article |
| 英文摘要 | Peatlands store one-third of global soil carbon(1). Drought/drainage coupled with climate warming present the main threat to these stores(1-4). Hence, understanding drought effects and inherent feedbacks related to peat decomposition has been a primary global challenge(5,6). However, widely divergent results concerning drought in recent studies(3,7-11) challenge the accepted paradigm that waterlogging and associated anoxia are the overarching controls locking up carbon stored in peat. Here, by linking field and microcosm experiments, we show how previously unrecognized mechanisms regulate the build-up of phenolics, which protects stored carbon directly by reducing phenol oxidase activity during short-term drought and, indirectly, through a shift from low-phenolic Sphagnum/herbs to high-phenolic shrubs after long-term moderate drought. We demonstrate that shrub expansion induced by drought/warming(2,6,10,12,13) in boreal peatlands might be a long-term self-adaptive mechanism not only increasing carbon sequestration but also potentially protecting historic soil carbon. We therefore propose that the projected 'positive feedback loop' between carbon emission and drought in peatlands(2,3,14,15) may not occur in the long term. |
| 学科主题 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
| 出版地 | BERLIN |
| 电子版国际标准刊号 | 1758-6798 |
| WOS关键词 | PHENOL OXIDASE ACTIVITY ; MICROBIAL COMMUNITY ; ORGANIC-MATTER ; WATER-LEVEL ; SOIL ; DECOMPOSITION ; RESPIRATION ; FEEDBACK ; FLUXES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) ; Social Science Citation Index (SSCI) |
| 语种 | 英语 |
| WOS记录号 | WOS:000356814800037 |
| 出版者 | NATURE RESEARCH |
| 资助机构 | Coastal Carolina/Southeastern Virginia Strategic Habitat Conservation Team ; US Fish and Wildlife Service-Region 4 ; Nature Conservancy of North Carolina ; US DOE Office of Science, Terrestrial Ecosystem Sciences [DE-SC0012272] ; Duke University Wetland Center Endowment |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25848]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Duke Univ, Wetland Ctr, Nicholas Sch Environm, Box 90333, Durham, NC 27708 USA 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Hongjun,Richardson, Curtis J.,Ho, Mengchi. Dual controls on carbon loss during drought in peatlands[J]. NATURE CLIMATE CHANGE,2015,5(6):584+. |
| APA | Wang, Hongjun,Richardson, Curtis J.,&Ho, Mengchi.(2015).Dual controls on carbon loss during drought in peatlands.NATURE CLIMATE CHANGE,5(6),584+. |
| MLA | Wang, Hongjun,et al."Dual controls on carbon loss during drought in peatlands".NATURE CLIMATE CHANGE 5.6(2015):584+. |
入库方式： OAI收割
来源：植物研究所
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