Research project linked to the restoration of land affected by Terrera Nova de Cardona: PHASE II

ERCROS
2019–2022

This project is being carried out in collaboration with the University of Barcelona and focuses on ecological restoration of the old Terrera Nova waste dump, where salt was collected and removed years ago. The original soils are highly salinized, and the restoration of the area requires planning techniques and strategies to promote washing of soluble soil salts and allow revegetation.
The main washing strategy is to design morphologies that accelerate soil washing of salts during natural rainfall. This action is complemented by planting local halophilic species. The morphology combines slopes and berms that favour the superficial washing of salts and their elimination through the drainage system that is created. Subsequently, cartography and analysis of soils are carried out as a phase prior to any revegetation. Based on these results, the planting and sowing programme is established in areas where there is potential for success. Controlling the evolution of the salt content over time allows the planning of subsequent plantings and sowings and the identification of the most favourable areas to make revegetation costs beneficial.