“The green poster” A method to evaluate the sustainability of the urban green structure

Universal indicators on the sustainability of the urban green structure independent of the specific culture of the country, the region, and even the town, seem to be difficult either to establish or maintain because the opinions differ so much as to their applicability. This notwithstanding, this paper addresses the possibility of establishing a set of relevant indicators. Some of the proposals contained herein are given based on the ideas emanating from the 1987 World Commission on Environment and Development. The importance of the local context as well as the need for more knowledge of the green structure values is also stressed in the paper. “The green poster”—which has been developed in Norway during the last 10 years—is introduced as a potential to evaluate the sustainability of the urban green structure. As an analytical tool, it has the advantage of providing both a numerical as well as a visualized picture of the situation.