(a) Map showing the distribution of vegetation plots from dataset of pistachio open woodlands (110 relevés) with blue circles represent the Pistacietum khinjuk, red circles the Pistacietum verae. (b) Map showing distribution of the plots from the second comparative dataset (1,276 relevés) including woody and grassland phytocoenoses with close relationship with analysed vegetation in the Irano-Turanian or Mediterranean regions: Carpino-Fagetea forests (352 relevés), Pino-Juniperetea and Juniperetea pseudosabinae stands (119 relevés), Quercetea ilicis and Quercetea pubescentis forests from (321 relevés), Crataego-Prunetea shrubland (146 relevés), Prangetea ulopterae tall-forb communities (156 relevés) and Stipo-Trachynietea distachyae pseudosteppes (180 relevés).