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Key knowledge and data gaps in modelling the influence of CO2 concentration on the terrestrial carbon sink

Pugh, T. A M; Müller, C.; Arneth, A. LU ; Haverd, V. and Smith, B. LU (2016) In Journal of Plant Physiology 203. p.3-15
Abstract

Primary productivity of terrestrial vegetation is expected to increase under the influence of increasing atmospheric carbon dioxide concentrations ([CO2]). Depending on the fate of such additionally fixed carbon, this could lead to an increase in terrestrial carbon storage, and thus a net terrestrial sink of atmospheric carbon. Such a mechanism is generally believed to be the primary global driver behind the observed large net uptake of anthropogenic CO2 emissions by the biosphere. Mechanisms driving CO2 uptake in the Terrestrial Biosphere Models (TBMs) used to attribute and project terrestrial carbon sinks, including that from increased [CO2], remain in large parts unchanged since those... (More)

Primary productivity of terrestrial vegetation is expected to increase under the influence of increasing atmospheric carbon dioxide concentrations ([CO2]). Depending on the fate of such additionally fixed carbon, this could lead to an increase in terrestrial carbon storage, and thus a net terrestrial sink of atmospheric carbon. Such a mechanism is generally believed to be the primary global driver behind the observed large net uptake of anthropogenic CO2 emissions by the biosphere. Mechanisms driving CO2 uptake in the Terrestrial Biosphere Models (TBMs) used to attribute and project terrestrial carbon sinks, including that from increased [CO2], remain in large parts unchanged since those models were conceived two decades ago. However, there exists a large body of new data and understanding providing an opportunity to update these models, and directing towards important topics for further research. In this review we highlight recent developments in understanding of the effects of elevated [CO2] on photosynthesis, and in particular on the fate of additionally fixed carbon within the plant with its implications for carbon turnover rates, on the regulation of photosynthesis in response to environmental limitations on in-plant carbon sinks, and on emergent ecosystem responses. We recommend possible avenues for model improvement and identify requirements for better data on core processes relevant to the understanding and modelling of the effect of increasing [CO2] on the global terrestrial carbon sink.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Plant Physiology
volume
203
pages
13 pages
publisher
Gustav Fischer Verlag
external identifiers
  • scopus:84971638468
  • wos:000385038100002
ISSN
0176-1617
DOI
10.1016/j.jplph.2016.05.001
language
English
LU publication?
yes
id
a787037b-040f-4d15-93f4-f4e775ea5a07
date added to LUP
2016-10-11 17:17:22
date last changed
2017-11-05 05:07:58
@article{a787037b-040f-4d15-93f4-f4e775ea5a07,
  abstract     = {<p>Primary productivity of terrestrial vegetation is expected to increase under the influence of increasing atmospheric carbon dioxide concentrations ([CO<sub>2</sub>]). Depending on the fate of such additionally fixed carbon, this could lead to an increase in terrestrial carbon storage, and thus a net terrestrial sink of atmospheric carbon. Such a mechanism is generally believed to be the primary global driver behind the observed large net uptake of anthropogenic CO<sub>2</sub> emissions by the biosphere. Mechanisms driving CO<sub>2</sub> uptake in the Terrestrial Biosphere Models (TBMs) used to attribute and project terrestrial carbon sinks, including that from increased [CO<sub>2</sub>], remain in large parts unchanged since those models were conceived two decades ago. However, there exists a large body of new data and understanding providing an opportunity to update these models, and directing towards important topics for further research. In this review we highlight recent developments in understanding of the effects of elevated [CO<sub>2</sub>] on photosynthesis, and in particular on the fate of additionally fixed carbon within the plant with its implications for carbon turnover rates, on the regulation of photosynthesis in response to environmental limitations on in-plant carbon sinks, and on emergent ecosystem responses. We recommend possible avenues for model improvement and identify requirements for better data on core processes relevant to the understanding and modelling of the effect of increasing [CO<sub>2</sub>] on the global terrestrial carbon sink.</p>},
  author       = {Pugh, T. A M and Müller, C. and Arneth, A. and Haverd, V. and Smith, B.},
  issn         = {0176-1617},
  language     = {eng},
  pages        = {3--15},
  publisher    = {Gustav Fischer Verlag},
  series       = {Journal of Plant Physiology},
  title        = {Key knowledge and data gaps in modelling the influence of CO<sub>2</sub> concentration on the terrestrial carbon sink},
  url          = {http://dx.doi.org/10.1016/j.jplph.2016.05.001},
  volume       = {203},
  year         = {2016},
}