Considering the overall goals of the OpenNESS project and its variety of case studies, it is important to have a clear idea about how the concept of green infrastructure can be operationalised in practice, despite its inherent conceptual complexity and ambiguity. The concept of Green Infrastructure (GI) is gaining political momentum and has been rapidly introduced in both planning theory and policy, especially in US and Europe. Yet, it does not have a single widely recognised or accepted definition.
