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

Research output: Contribution to journalArticle

Abstract

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).

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Geography

Keywords

  • photosynthesis, Rubisco, NPP, LPJ-GUESS, forest response, FACE, ecosystem model, CO(2) fertilization, climate change, carbon cycle
Original languageEnglish
Pages (from-to)1531-1542
JournalGlobal Change Biology
Volume14
Issue number7
Publication statusPublished - 2008
Publication categoryResearch
Peer-reviewedYes