Version 4 (modified by bguenet, 4 months ago) (diff)



This version of ORCHIDEE has been used in “Zhang, H., Lauerwald, R., Regnier, P., Ciais, P., Yuan, W., Naipal, V., Guenet, B., Van Oost, K. and Camino‐Serrano, M.: Simulating erosion‐induced soil and carbon delivery from uplands to rivers in a global land surface model, J. Adv. Model. Earth Syst., 1(C), 1–24, doi:10.1029/2020ms002121, 2020."


Global water erosion strongly affect the terrestrial carbon (C) balance. However, this process is currently ignored by most global land surface models (LSMs) that are used to project the responses of terrestrial C storage to climate and land use changes. One of the main obstacles of implementing erosion process in LSMs is the high spatial resolution needed to accurately represent the effect of topography on soil erosion and sediment delivery to rivers. In this study, we present an upscaling scheme for including erosion-induced lateral soil and soil organic C (SOC) movements into the ORCHIDEE LSM. This upscaling scheme integrates information from high-resolution (3″, ~90 m) topographic and soil erodibility data into a LSM forcing file at 0.5° spatial resolution. This approach allows to include the erosion-induced lateral carbon flux from the land to aquatic systems into coarse-grid LSMs to account for long term effects of erosion processes in the regional-scale terrestrial carbon balance. We applied and evaluated this modelling strategy for the Rhine catchment and found that our model reproduces well the observed spatial and temporal (both seasonal and interannual) variations in river runoff and the net soil loss from upland to the river network. Although the annually average lateral SOC flux from upland to the Rhine River network only amounts to 0.5% of the annual net vegetation primary production and 0.01% of the total SOC stock in the whole catchment, SOC loss caused by soil erosion over a long period (e.g. thousands of years) induces a reduction by 12% of the simulated equilibrium SOC stocks.

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Creator Haicheng ZHANG
Affiliation Université Libre de Bruxelles
Title ORCHIDEE-MUSLE revision 6129
Publisher Institut Pierre Simon Laplace (IPSL)
PublicationYear 2020
ResourceType Software
Rights This software is distributed under the CeCILL license
Subject Soil erosion, lateral carbon redistribution, Land surface model, terrestrial carbon cycle
DataManager Karim Ramage (IPSL)
DataCurator Josefine Ghattas (IPSL)
ContactPerson Haicheng Zhang (Université Libre de Bruxelles)
FundingReference The IMBALANCE-P project of the European Research Council (ERC-2013-SyG- 610028); The ‘Lateral-CNP’ project (No. 34823748) supported by the Fonds de la Recherche Scientifique –FNRS