“…In particular, we choose the i-Tree Eco tool as it has become an international standard in assessing ecosystem services and economic values derived specifically from urban trees. Numerous studies have been conducted to validate this tool through case study applications [20,32,33] and comparison and synergy with other tools such as allometric equations or direct measurements [34][35][36][37][38]. At first, i-Tree Eco has been extensively applied in the USA [39][40][41]; since 2010, it has been widely used in other countries and various climatic regions [32,35,37,42,43], and, in recent years, its use has also been spreading in southern Europe/Mediterranean contexts [33,44,45].…”