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Understanding the u...
Understanding the uncertainty in global forest carbon turnover
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- Pugh, Thomas A.M. (författare)
- University of Birmingham
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- Rademacher, Tim (författare)
- Harvard University,Northern Arizona University
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- Shafer, Sarah L. (författare)
- United States Geological Survey, Reston
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- Steinkamp, Jorg (författare)
- Senckenberg Biodiversity and Climate Research Centre,Johannes-Gutenberg University Mainz
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- Barichivich, Jonathan (författare)
- Versailles Saint-Quentin-en-Yvelines University,Austral University of Chile
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- Beckage, Brian (författare)
- University of Vermont
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- Haverd, Vanessa (författare)
- CSIRO Oceans and Atmosphere, Canberra
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- Harper, Anna (författare)
- University of Exeter
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- Heinke, Jens (författare)
- Potsdam Institute for Climate Impact Research
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- Nishina, Kazuya (författare)
- National Institute for Environmental Studies of Japan
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- Rammig, Anja (författare)
- Technical University of Munich
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- Sato, Hisashi (författare)
- Japan Agency for Marine-Earth Science and Technology
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- Arneth, Almut (författare)
- Institute of Atmospheric Environmental Research (IMK-IFU),Karlsruhe Institute of Technology
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- Hantson, Stijn (författare)
- University of California, Irvine
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- Hickler, Thomas (författare)
- Goethe University,Senckenberg Biodiversity and Climate Research Centre
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- Kautz, Markus (författare)
- Forest Research Institute Baden-Wurttemberg
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- Quesada, Benjamin (författare)
- Rosario University,Karlsruhe Institute of Technology
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- Smith, Benjamin (författare)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science,Hawkesbury Institute for the Environment
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- Thonicke, Kirsten (författare)
- Potsdam Institute for Climate Impact Research
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(creator_code:org_t)
- 2020-08-05
- 2020
- Engelska 29 s.
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Ingår i: Biogeosciences. - : Copernicus GmbH. - 1726-4170 .- 1726-4189. ; 17:15, s. 3961-3989
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://bg.copernicu...
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https://lup.lub.lu.s...
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https://doi.org/10.5...
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Abstract
Ämnesord
Stäng
- The length of time that carbon remains in forest biomass is one of the largest uncertainties in the global carbon cycle, with both recent historical baselines and future responses to environmental change poorly constrained by available observations. In the absence of large-scale observations, models used for global assessments tend to fall back on simplified assumptions of the turnover rates of biomass and soil carbon pools. In this study, the biomass carbon turnover times calculated by an ensemble of contemporary terrestrial biosphere models (TBMs) are analysed to assess their current capability to accurately estimate biomass carbon turnover times in forests and how these times are anticipated to change in the future. Modelled baseline 1985-2014 global average forest biomass turnover times vary from 12.2 to 23.5 years between TBMs. TBM differences in phenological processes, which control allocation to, and turnover rate of, leaves and fine roots, are as important as tree mortality with regard to explaining the variation in total turnover among TBMs. The different governing mechanisms exhibited by each TBM result in a wide range of plausible turnover time projections for the end of the century. Based on these simulations, it is not possible to draw robust conclusions regarding likely future changes in turnover time, and thus biomass change, for different regions. Both spatial and temporal uncertainty in turnover time are strongly linked to model assumptions concerning plant functional type distributions and their controls. Thirteen model-based hypotheses of controls on turnover time are identified, along with recommendations for pragmatic steps to test them using existing and novel observations. Efforts to resolve uncertainty in turnover time, and thus its impacts on the future evolution of biomass carbon stocks across the world's forests, will need to address both mortality and establishment components of forest demography, as well as allocation of carbon to woody versus non-woody biomass growth.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Pugh, Thomas A.M ...
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Rademacher, Tim
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Shafer, Sarah L.
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Steinkamp, Jorg
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Barichivich, Jon ...
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Beckage, Brian
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visa fler...
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Haverd, Vanessa
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Harper, Anna
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Heinke, Jens
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Nishina, Kazuya
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Rammig, Anja
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Sato, Hisashi
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Arneth, Almut
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Hantson, Stijn
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Hickler, Thomas
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Kautz, Markus
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Quesada, Benjami ...
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Smith, Benjamin
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Thonicke, Kirste ...
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visa färre...
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