Hi Jan,

I did a modelling study based in a deciduous forest model, where I estimated the impact of CO2 concentration increase in function of changing climate (including temperature increase). The study elicits the long-term impact of measured CO2 and temperature over a period of more than a century. Net Carbon Exchange (NCE) was calculated over the canopy - atmosphere interface.

The impact of CO2 on NCE depends strongly on the developmental status of the forest, as well as temperature. In that study no other factors were taken into account. But the climate scenario is based on measured meteorology and hence climate (change).

I noticed that the behaviour of forest ecosystems can by quite tricky! For example, OTC (Open Top Chamber) experiments are in general based on very young plants, which enhances the impact a CO2 increase on NPP, much stronger than for mature trees in a forest ecosystem.

The paper is on Research Gate:

On the use of a simple deciduous forest model for the interpretation of climate change effects at the level of carbon dynamics

• September 1994 - Ecological Modelling 75/76:221-237 - DOI: 10.1016/0304-3800(94)90021-3

The link is:

https://www.researchgate.net/publication/248413599_On_the_use_of_a_simple_deciduous_forest_model_for_the_interpretation_of_climate_change_effects_at_the_level_of_carbon_dynamics

CHeerz,

Frank