Joan Llusià (CREAF, Barcelone, Projet Imbalance-P, ERC)

VOCs are volatile organic molecules. They can be of biological and artificial origin. They are formed by many types of molecules with multiple functional groups and configurations and molecular conformations. The main type of these compounds are the terpenes (isoprenoids) which are a product of the secondary metabolism of vegetables. In addition, they may have other biological and artificial origins. BVOCs produced and emitted by plants apart to their physiological importance as protectors of plants in the face of multiple stresses, they have roles in biotic relationships.
Tropical soils and vegetation represent globally significant sources of a range of atmospheric gases, including CO₂, CO, N₂O, NO, CH₄, and Volatile Organic Compounds (VOCs).
There is a lot of information on BVOC emissions from tropical vegetation although more field studies are needed, however there is little information about COVB emissions from tropical soils.
The importance of terpenes emitted by tropical soils (Amazonian rain forest) in the overall balance of VOCs is currently being seriously considered. Also the isoprene would be seen as a regulator of the climate within the forests and, consequently, their structure.

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Aide mise à jour Scopia, janvier 2016 (Client)