H5b - Closed sand steppes:
47% of its area is endangered by plant invasion. The most dangerous invaders are black locust (Robinia pseudoacacia) and Russian olive (Elaeagnus angustifolia).
Botta-Dukát Z. (2008): Invasion of alien species to Hungarian (semi-)natural habitats Acta Botanica Hungarica 50(Suppl.): 219-227. >>> letöltés (139 KB, PDF)