The Interreg project VERDEVALE is aimed to build innovative best practices to improve the environmental, social, and economic benefits provided by urban green areas . To increase the understanding of ecosystem services provided by urban vegetation, as well as to improve the understanding of existing green areas through more accurate inventories are key objectives for municipalities. Within this framework, the coop. Demetra srl contracted the Department to conduct direct measurements of some ecosystem services provided by urban tree and shrub species in Lugano and Bolzano. A particular focus will be on the measurement of CO2 assimilation and of the contribution of transpiration to microclimate improvement.