Terrestrial vegetation redistribution and carbon balance under climate change

BackgroundDynamic Global Vegetation Models (DGVMs) compute the terrestrial carbon balance as well as the transient spatial distribution of vegetation. We study two scenarios of moderate and strong climate change (2.9 K and 5.3 K temperature increase over present) to investigate the spatial redistribution of major vegetation types and their carbon balance in the year 2100.ResultsThe world's land vegetation will be more deciduous than at present, and contain about 125 billion tons of additional carbon. While a recession of the boreal forest is simulated in some areas, along with a general expansion to the north, we do not observe a reported collapse of the central Amazonian rain forest. Rather, a decrease of biomass and a change of vegetation type occurs in its northeastern part. The ability of the terrestrial biosphere to sequester carbon from the atmosphere declines strongly in the second half of the 21st century.ConclusionClimate change will cause widespread shifts in the distribution of major vegetation functional types on all continents by the year 2100.

[1]  F. Woodward,et al.  Vegetation dynamics – simulating responses to climatic change , 2004, Biological reviews of the Cambridge Philosophical Society.

[2]  S. Gerber,et al.  Sensitivity of a dynamic global vegetation model to climate and atmospheric CO2 , 2004 .

[3]  I. C. Prentice,et al.  Climatic Control of the High-Latitude Vegetation Greening Trend and Pinatubo Effect , 2002, Science.

[4]  R. Betts,et al.  Amazonian forest dieback under climate-carbon cycle projections for the 21st century , 2004 .

[5]  Joanna Isobel House,et al.  Reconciling apparent inconsistencies in estimates of terrestrial CO2 sources and sinks , 2003 .

[6]  Paul R Moorcroft,et al.  How close are we to a predictive science of the biosphere? , 2006, Trends in ecology & evolution.

[7]  Wolfgang Lucht,et al.  Terrestrial biosphere carbon storage under alternative climate projections , 2006 .

[8]  Stephen Sitch,et al.  Global warming feedbacks on terrestrial carbon uptake under the Intergovernmental Panel on Climate Change (IPCC) Emission Scenarios , 2001 .

[9]  S. Lavorel,et al.  Terrestrial Ecosystems in a Changing World , 2007 .

[10]  Philippe Ciais,et al.  How uncertainties in future climate change predictions translate into future terrestrial carbon fluxes , 2003 .

[11]  F. Woodward,et al.  Global response of terrestrial ecosystem structure and function to CO2 and climate change: results from six dynamic global vegetation models , 2001 .

[12]  John F. B. Mitchell,et al.  The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments , 2000 .

[13]  Toshihiko Masui,et al.  Research, part of a Special Feature on Scenarios of global ecosystem services Changes in Nature's Balance Sheet: Model-based Estimates of Future Worldwide Ecosystem Services , 2005 .

[14]  Stephen Sitch,et al.  Dynamic global vegetation modelling: quantifying terrestrial ecosystem responses to large-scale environmental change , 2007 .

[15]  W. Lucht,et al.  Terrestrial vegetation and water balance-hydrological evaluation of a dynamic global vegetation model , 2004 .

[16]  R. Schnur,et al.  Climate-carbon cycle feedback analysis: Results from the C , 2006 .

[17]  P. Jones,et al.  Representing Twentieth-Century Space-Time Climate Variability. Part II: Development of 1901-96 Monthly Grids of Terrestrial Surface Climate , 2000 .

[18]  Wolfgang Lucht,et al.  Small net carbon dioxide uptake by Russian forests during 1981–1999 , 2006 .

[19]  A. Watts,et al.  The Myths of Restoration Ecology , 2005 .

[20]  P. Cox,et al.  How positive is the feedback between climate change and the carbon cycle? , 2003 .

[21]  P. Reich,et al.  Photosynthesis, carboxylation and leaf nitrogen responses of 16 species to elevated pCO2 across four free‐air CO2 enrichment experiments in forest, grassland and desert , 2004 .

[22]  P. Ciais,et al.  Multiple constraints on regional CO2 flux variations over land and oceans , 2005 .

[23]  Bas Eickhout,et al.  Another reason for concern: regional and global impacts on ecosystems for different levels of climate change , 2004 .

[24]  Ronald P. Neilson,et al.  Potentially complex biosphere responses to transient global warming , 1998 .

[25]  S S I T C H,et al.  Evaluation of Ecosystem Dynamics, Plant Geography and Terrestrial Carbon Cycling in the Lpj Dynamic Global Vegetation Model , 2022 .

[26]  E. (Ted) Hogg,et al.  Regeneration of planted conifers across climatic moisture gradients on the Canadian prairies: implications for distribution and climate change , 1997 .

[27]  R. Betts,et al.  The role of ecosystem-atmosphere interactions in simulated Amazonian precipitation decrease and forest dieback under global climate warming , 2004 .

[28]  R. Betts,et al.  Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model , 2000, Nature.

[29]  K. Trenberth,et al.  Modern Global Climate Change , 2003, Science.

[30]  W. Wagner,et al.  Hydrologic resilience of the terrestrial biosphere , 2005 .

[31]  R. Siegwolf,et al.  Carbon Flux and Growth in Mature Deciduous Forest Trees Exposed to Elevated CO2 , 2005, Science.

[32]  R. Norby,et al.  Evaluating ecosystem responses to rising atmospheric CO2 and global warming in a multi‐factor world , 2004 .