Natural landscapes in urban space undergo greater and greater degradation. In spite of legal protection, pressures on urban development of open green spaces increase. One kind of protection of such sites is their revitalization, with destination on tourist-recreational targets. South wedge of Poznan urban green degrades by the reason of underinvestment, communication building (highway, planned express traffic line) and unlimited building development pressure. Revitalization project is proposed for its containment of further degradation, basing on setting out of train track line passing near attractive places of cultural landscape. The subject of the paper is presentation of idea of using valorisation key as one of elements of cartographic methodic of spatial decision aid on the field of urban green revitalization planning. The aim of decision maps is illustration of miscellaneous visions, expectations and concepts of change of developed area on the background of its current state, as the base for further negotiations and agreements. It is planned, that using of such approach is a way to more conscious participation of local community in urban decision processes, which lead actual implementation of sustainable development idea. Presented design is only background for illustration of practical aspects of cartographic methodic of decision aid.