Paul Miller
Senior lecturer
CO2 fertilisation in temperate forest FACE results not representative for global forests.
Author
Summary, in 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).
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).
Department/s
- Dept of Physical Geography and Ecosystem Science
Publishing year
2008
Language
English
Pages
1531-1542
Publication/Series
Global Change Biology
Volume
14
Issue
7
Links
Document type
Journal article
Publisher
Wiley-Blackwell
Topic
- Physical Geography
Keywords
- photosynthesis
- Rubisco
- NPP
- LPJ-GUESS
- forest response
- FACE
- ecosystem model
- CO(2) fertilization
- climate change
- carbon cycle
Status
Published
Project
- Climate Initiative
ISBN/ISSN/Other
- ISSN: 1354-1013