Biomass allocation in five semi-arid afforestation species is driven mainly by ontogeny rather than resource availability

摘要

Key message The changes in the relative biomass allocation to roots in juvenile stands of fast-growing (Leucaena leucocephala Lam., Moringa oleifera Lam., and Jatropha curcas L.) and slow-growing (Anacardium occidentale L. and Parkia biglobosa Jacq.) afforestation species are driven mainly by ontogeny rather than resource availability. However, silvicultural management aiming at increasing availability of water and particularly nutrients enhances biomass production in all species.