Table 2.

Main types of projects within the theme “Establishment and Selection” of trees for urban uses.

Project themeAdditional informationNumber of projects
Selection and testing of plant material for urban areasStudies on the tolerance of trees to diseases, the urban climate, pollutants, etc.60
Establishment of street trees and urban woodlandsStudies concerning the technical aspects of establishment, such as planting methods, protection, and planting containers.48
Growing media, mixtures, and soilsStudies concerning new growing media for urban trees22
De-icing agentsStudies looking at the effects of de-icing agents on vegetation, as well as the projection of trees against damages.13
Roots and/or mycorrhizae12