Matrix representation of lateral soil movements: scaling and calibrating CE-DYNAM (v2) at a continental level

Promoting sustainable soil management is a possible option for achieving net-zero greenhouse gas emissions in the future. Several efforts in this area exist, and the application of spatially explicit models to anticipate the effect of possible actions on soils at a regional scale is widespread. Currently, models can simulate the impacts of changes on land cover, land management, and the climate on the soil carbon stocks. However, existing modeling tools do not incorporate the lateral transport and deposition of soil material, carbon, and nutrients caused by soil erosion. The absence of these fluxes may lead to an oversimplified representation of the processes, which hinders, for example, a further understanding of how erosion has been affecting the soil carbon pools and nutrients through time. The sediment transport during deposition and the sediment loss to rivers create dependence among the simulation units, forming a cumulative effect through the territory. If, on the one hand, such a characteristic implies that calculations must be made for large geographic areas corresponding to hydrological units, on the other hand, it also can make models computationally expensive, given that erosion and redeposition processes must be modeled at high resolution and over long timescales. In this sense, the present work has a three-fold objective.

FENDRICH Arthur;  CIAIS Philippe;  LUGATO Emanuele;  CAROZZI Marco;  GUENET Bertrand;  BORRELLI Pasquale;  NAIPAL Victoria;  MCGRATH Matthew;  MARTIN Philippe;  PANAGOS Panagiotis; 

2022-11-02

COPERNICUS GESELLSCHAFT MBH

JRC129356

1991-959X (online),   

https://gmd.copernicus.org/articles/15/7835/2022/,    https://publications.jrc.ec.europa.eu/repository/handle/JRC129356,   

10.5194/gmd-15-7835-2022 (online),