DOI: 10.1002/2015GB005286
Scopus记录号: 2-s2.0-84957827680
论文题名: A century of human-driven changes in the carbon dioxide concentration of lakes
作者: Perga M ; -E ; , Maberly S ; C ; , Jenny J ; -P ; , Alric B ; , Pignol C ; , Naffrechoux E
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期: 2 起始页码: 93
结束页码: 104
语种: 英语
英文关键词: climate change
; CO2
; lake
; paleolimnology
; phosphorous
Scopus关键词: carbon dioxide
; carbon sequestration
; chemical process
; climate change
; concentration (composition)
; global change
; global climate
; global warming
; human activity
; inland sea
; lake
; metabolism
; nutrient
; paleolimnology
; phosphorus
英文摘要: Now that evasion of carbon dioxide (CO2) from inland waters is accounted for in global carbon models, it is crucial to quantify how these fluxes have changed in the past and forecast how they may alter in the future in response to local and global change. Here we developed a sediment proxy for the concentration of summer surface dissolved CO2 concentration and used it to reconstruct changes over the past 150 years for three large lakes that have been affected by climate warming, changes in nutrient load, and detrital terrigenous supplies. Initially CO2 neutral to the atmosphere, all three lakes subsequently fluctuated between near equilibrium and supersaturation. Although catchment inputs have supplied CO2 to the lakes, internal processes and reallocation have ultimately regulated decadal changes in lake surface CO2 concentration. Nutrient concentration has been the dominant driver of CO2 variability for a century although the reproducible, nonmonotonic relationship of CO2 to nutrient concentration suggests an interplay between metabolic and chemical processes. Yet for two of these lakes, climatic control of CO2 concentrations has been important over the last 30 years, promoting higher surface CO2 concentrations, likely by decreasing hypolimnetic carbon storage. This new approach offers the unique opportunity to scale, a posteriori, the long-term impact of human activities on lake CO2. © 2016. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77888
Appears in Collections: 气候变化事实与影响
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作者单位: CARRTEL, INRA (French National Institute for Agronomical Research), Thonon-les-Bains, France; CARRTEL, Université Savoie Mont Blanc, Chambéry, France; Lake Ecosystems Group, Centre for Ecology and Hydrology, Lancaster, United Kingdom; EDYTEM, CNRS, Université Savoie Mont Blanc, Chambéry, France; INRS (National Institute of Scientific Research), Montreal, QC, Canada; LCME, Université Savoie Mont Blanc, Chambéry, France
Recommended Citation:
Perga M,-E,, Maberly S,et al. A century of human-driven changes in the carbon dioxide concentration of lakes[J]. Global Biogeochemical Cycles,2016-01-01,30(2)