DOI: 10.1016/j.scitotenv.2019.136476
论文题名: Stability of the permafrost peatlands carbon pool under climate change and wildfires during the last 150 years in the northern Great Khingan Mountains, China
作者: Cong J. ; Gao C. ; Han D. ; Li Y. ; Wang G.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 712 语种: 英语
英文关键词: Aromatic
; Carbohydrate
; Carbon accumulation
; Mid-high latitude
; Permafrost peatlands
Scopus关键词: Carbohydrates
; Carbon
; Climate models
; Fires
; Lakes
; Permafrost
; Stability
; Wetlands
; Aromatic
; Carbon accumulation
; Global land surface
; High Latitudes
; High-latitude regions
; Increasing temperatures
; Peat land
; Wildfire frequencies
; Climate change
; carbon
; accumulation
; aromatic hydrocarbon
; carbohydrate
; climate change
; historical perspective
; latitude
; paleoclimate
; peatland
; permafrost
; stability analysis
; wildfire
; Article
; China
; climate change
; comparative study
; controlled study
; environmental impact
; environmental policy
; Fourier transform infrared spectroscopy
; peatland
; permafrost
; precipitation
; priority journal
; sensitivity analysis
; soil analysis
; soil chemistry
; temperature
; wildfire
; China
; Da Hinggan Mountains
英文摘要: Peatlands store one-third of the total global soil carbon (C.) despite covering only 3–4% of the global land surface. Most peatlands are distributed in mid-high latitude regions and are even in permafrost regions, are sensitive to climate change and are disturbed by wildfire. Although several studies have focused on the impact of historical climate change and regional human activities on the C. accumulation process in these peatlands, the impact of these factors on the stability of the C. pool remains poorly understood. Here, based on the 210Pb age-depth model, we investigated the historical variations of C. stability during the last 150 years for five typical peatlands in the northern Great Khingan Mountains (Northeast China), an area located in a permafrost region that is sensitive to climate change and to wildfires, which have clearly increased due to regional human activities. The results showed that low C. accumulation rates (CARs) and weakly C. stability in studied peatlands before 1900. While, the increasing anthropogenic wildfire frequency and the residual products (e.g. pyrogenic carbon) increased the CARs and C. stability in peatlands from 1900 to 1980. The mean July temperature is the most important climate factor for peatlands C. stability. After 1980, due to the low wildfire frequencies influenced by human policies, increasing temperatures and decreasing precipitation not only increased the CARs but also markedly increased the C. stability of the peatlands C. pool in the northern Great Khingan Mountains, especially after 2000. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158411
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Shengbei Street 4888, Changchun, 130102, China; University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation:
Cong J.,Gao C.,Han D.,et al. Stability of the permafrost peatlands carbon pool under climate change and wildfires during the last 150 years in the northern Great Khingan Mountains, China[J]. Science of the Total Environment,2020-01-01,712