| DOI: | 10.1002/2015GL066824
|
| 论文题名: | Untangling climate signals from autogenic changes in long-term peatland development |
| 作者: | Morris P.J.; Baird A.J.; Young D.M.; Swindles G.T.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8288
|
| EISSN: | 1944-8019
|
| 出版年: | 2015
|
| 卷: | 42, 期:24 | | 起始页码: | 10788
|
| 结束页码: | 10797
|
| 语种: | 英语
|
| 英文关键词: | 4.2 ka B.P. event
; DigiBog
; ecohydrological feedback
; Holocene climate
; peatland signal preservation
; peatland signal shredding
|
| Scopus关键词: | Feedback
; Groundwater
; High pass filters
; Low pass filters
; Peat
; Rain
; Signal processing
; Wetlands
; 4.2ka B.P. event
; DigiBog
; Holocene climate
; Peatland
; Signal preservation
; Climate models
; climate change
; climate modeling
; climate signal
; decomposition
; ecohydrology
; feedback mechanism
; Holocene
; long-term change
; paleoclimate
; peatland
; precipitation (climatology)
; reconstruction
; water table
|
| 英文摘要: | Peatlands represent important archives of Holocene paleoclimatic information. However, autogenic processes may disconnect peatland hydrological behavior from climate and overwrite climatic signals in peat records. We use a simulation model of peatland development driven by a range of Holocene climate reconstructions to investigate climate signal preservation in peat records. Simulated water-table depths and peat decomposition profiles exhibit homeostatic recovery from prescribed changes in rainfall, whereas changes in temperature cause lasting alterations to peatland structure and function. Autogenic ecohydrological feedbacks provide both high- and low-pass filters for climatic information, particularly rainfall. Large-magnitude climatic changes of an intermediate temporal scale (i.e., multidecadal to centennial) are most readily preserved in our simulated peat records. Simulated decomposition signals are offset from the climatic changes that generate them due to a phenomenon known as secondary decomposition. Our study provides the mechanistic foundations for a framework to separate climatic and autogenic signals in peat records. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955175127&doi=10.1002%2f2015GL066824&partnerID=40&md5=4aa9737ec97a29c4cb25900ef6fe1e3f
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7904
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | School of Geography, University of Leeds, Leeds, United Kingdom
|
| Recommended Citation: | |
Morris P.J.,Baird A.J.,Young D.M.,et al. Untangling climate signals from autogenic changes in long-term peatland development[J]. Geophysical Research Letters,2015-01-01,42(24).
|
|
|