| DOI: | 10.1002/grl.50744
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| 论文题名: | Surface vegetation patterning controls carbon accumulation in peatlands |
| 作者: | Loisel J.; Yu Z.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8469
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| EISSN: | 1944-8200
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| 出版年: | 2013
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| 卷: | 40, 期:20 | | 起始页码: | 5508
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| 结束页码: | 5513
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| 语种: | 英语
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| 英文关键词: | alternative stable states
; ecosystem carbon-sink capacity
; ecosystem structural dynamics
; paleoecological reconstruction
; positive feedback
; spatial patterning
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| Scopus关键词: | Alternative stable state
; Paleoclimate reconstruction
; Paleoecological reconstruction
; Peatland development
; Power-law relationship
; Spatial patterning
; Stratigraphic analysis
; Terrestrial ecosystems
; Carbon
; Feedback
; Forestry
; Peat
; Stratigraphy
; Structural dynamics
; Vegetation
; Wetlands
; Ecosystems
; bioaccumulation
; carbon
; carbon sequestration
; carbon sink
; ecosystem structure
; paleoclimate
; peatland
; plant community
; vegetation dynamics
; Patagonia
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| 英文摘要: | Localized ecohydrological feedbacks have been proposed as important internal drivers of patterns and processes in terrestrial ecosystems. However, there is a significant gap between the prominence of theoretical models and the paucity of observations describing linkages between ecosystem structure and functioning. Here we report empirical evidence for strong interactions between surface vegetation patterning and long-term carbon sequestration rates in four peat bogs in Patagonia on the basis of high-resolution stratigraphic analyses. Peatland development across the study region was characterized by repeated switches between wet- and dry-adapted plant communities, depicting changes between hollows (wet assemblages) and lawns (dry assemblages) that could represent past surface patterning. We found a site-specific relationship between the frequency of the wet-to-dry cycles and carbon accumulation rates that followed a power function, with rapid vegetation shifts causing high peat accumulation rates. Our results show strong evidence for internal regulation of vegetation dynamics and peatland growth, implying that understanding peatland processes is a prerequisite for peat-based paleoclimate reconstructions. Key Points Temporal changes in spatial patterning promote carbon sequestration in bogs A power-law relationship exists between vegetation patterns and C accumulation Internal feedbacks are important in regulating peat bog growth ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84886130692&doi=10.1002%2fgrl.50744&partnerID=40&md5=c982bdcb1723afa4885deae2127bcc9e
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5733
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Earth and Environmental Sciences, Lehigh University, 1 West Packer Ave., Bethlehem, PA 18015-3001, United States
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| Recommended Citation: | |
Loisel J.,Yu Z.. Surface vegetation patterning controls carbon accumulation in peatlands[J]. Geophysical Research Letters,2013-01-01,40(20).
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