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CO2 fertilisation in temperate forest FACE results not representative for global forests.

Author:
  • Thomas Hickler
  • Benjamin Smith
  • IC Prentice
  • K Mjöfors
  • Paul Miller
  • Almut Arneth
  • Martin Sykes
Publishing year: 2008
Language: English
Pages: 1531-1542
Publication/Series: Global Change Biology
Volume: 14
Issue: 7
Document type: Journal article
Publisher: Wiley-Blackwell

Abstract english

Abstract in Undetermined

Results from free-air CO(2) enrichment (FACE) experiments in temperate climates indicate that the response of forest net primary productivity (NPP) to elevated CO(2) might be highly conserved across a broad range of productivities. In this study, we show that the LPJ-GUESS dynamic vegetation model reproduces the magnitude of the NPP enhancement at temperate forest FACE experiments. A global application of the model suggests that the response found in the experiments might also be representative of the average response of forests globally. However, the predicted NPP enhancement in tropical forests is more than twice as high as in boreal forests, suggesting that currently available FACE results are not applicable to these ecosystems. The modeled geographic pattern is to a large extent driven by the temperature dependence of the relative affinities of the primary assimilation enzyme (Rubisco) for CO(2) and O(2).

Keywords

  • Physical Geography
  • photosynthesis
  • Rubisco
  • NPP
  • LPJ-GUESS
  • forest response
  • FACE
  • ecosystem model
  • CO(2) fertilization
  • climate change
  • carbon cycle

Other

Published
  • Climate Initiative
  • ISSN: 1354-1013
E-mail: paul [dot] miller [at] nateko [dot] lu [dot] se

Department of Physical Geography and Ecosystem Science
Lund University
Sölvegatan 12
S-223 62 Lund
Sweden

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