DOI: 10.1002/2014GB004988
Scopus记录号: 2-s2.0-84945190657
论文题名: Strong dependence of CO2 emissions from anthropogenic land cover change on initial land cover and soil carbon parametrization
作者: Goll D ; S ; , Brovkin V ; , Liski J ; , Raddatz T ; , Thum T ; , Todd-Brown K ; E ; O
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 9 起始页码: 1511
结束页码: 1523
语种: 英语
英文关键词: decomposition
; earth system model
; land cover change
; land use
; terrestrial carbon cycle
Scopus关键词: anthropogenic source
; biomass
; carbon dioxide
; carbon flux
; climate feedback
; decomposition
; emission inventory
; flux measurement
; land cover
; land use change
; organic matter
; parameterization
; soil carbon
; source-sink dynamics
; uncertainty analysis
英文摘要: The quantification of sources and sinks of carbon from land use and land cover changes (LULCC) is uncertain. We investigated how the parametrization of LULCC and of organic matter decomposition, as well as initial land cover, affects the historical and future carbon fluxes in an Earth System Model (ESM). Using the land component of the Max Planck Institute ESM, we found that the historical (1750-2010) LULCC flux varied up to 25% depending on the fraction of biomass which enters the atmosphere directly due to burning or is used in short-lived products. The uncertainty in the decadal LULCC fluxes of the recent past due to the parametrization of decomposition and direct emissions was 0.6 Pg C yr-1, which is 3 times larger than the uncertainty previously attributed to model and method in general. Preindustrial natural land cover had a larger effect on decadal LULCC fluxes than the aforementioned parameter sensitivity (1.0 Pg C yr-1). Regional differences between reconstructed and dynamically computed land covers, in particular, at low latitudes, led to differences in historical LULCC emissions of 84-114 Pg C, globally. This effect is larger than the effects of forest regrowth, shifting cultivation, or climate feedbacks and comparable to the effect of differences among studies in the terminology of LULCC. In general, we find that the practice of calibrating the net land carbon balance to provide realistic boundary conditions for the climate component of an ESM hampers the applicability of the land component outside its primary field of application. ©2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77942
Appears in Collections: 气候变化事实与影响
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作者单位: Land in the Earth System, Max Planck Institute for Meteorology, Hamburg, Germany; KlimaCampus, Hamburg, Germany; Laboratoire des Sciences du Climat et de l'Environnment, CEA, CNRS, UVSQ, Gif-sur-Yvette, France; Finnish Environment Institute (SYKE), Helsinki, Finland; Finnish Meteorological Institute, Helsinki, Finland; Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States; Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, United States
Recommended Citation:
Goll D,S,, Brovkin V,et al. Strong dependence of CO2 emissions from anthropogenic land cover change on initial land cover and soil carbon parametrization[J]. Global Biogeochemical Cycles,2015-01-01,29(9)