Version 3 (modified by dgoll, 6 months ago) (diff)



This version of ORCHIDEE has been used in publication to be submitted: Carbon sink enhanced by atmospheric phosphorus deposition in simulations for tropical forest site in Central Africa

Abstract Growth in carbon sinks in pristine tropical forests slowed down during recent decades in South America, but not in Africa. Potential drivers behind these continental differences include differences in climate, its change, vegetation properties and nutrient sources. The latter has been overlooked, despite growing evidence of the contrasting importance of atmospheric deposition as a nutrient source for forest ecosystems. Using a terrestrial biosphere model, we quantify the impact of changes in atmospheric nutrient deposition on ecosystem productivity and biomass carbon sink at a lowland forest site in Central Africa.

We find that the increase in nutrient deposition since the 1980s has contributed to the carbon sink over the past four decades at an extent that is comparable to that from the combined effect of increasing atmospheric carbon dioxide and climate change. Further, we find that the modelled carbon sink responds asymmetrical to changes in phosphorus deposition, but less so to nitrogen deposition.

The pronounced response of ecosystem productivity to changes in nutrient deposition illustrates a continental scale mechanism which controls nutrient constraints on carbon sinks in Central Africa. Monitoring of nutrient deposition is needed in this region of alteration of nutrient deposition due to human land use.

The description of this model version can be found in Zhang et al., in prep (to be updated).

Code access

See the version on the webinterface here : ​

Extract it on a terminal as follow, type anonymous as password:

svn co --username anonymous svn:// ORCHIDEE


Creator Daniel Goll
Affiliation LSCE
Publisher Institut Pierre Simon Laplace (IPSL)
PublicationYear 2021
ResourceType Software
Rights This software is distributed under the CeCILL license
Subject Land surface model, gross primary production, carbon-nitrogen interactions
DataManager Karim Ramage (IPSL)
DataCurator Josefine Ghattas (IPSL)
ContactPerson Daniel Goll (LSCE/UPSaclay)
FundingReference the European Research Council Synergy project SyG-2013-610028 IMBALANCE-P and the ANR CLAND Convergence Institute