Abstract
Wall greening is attracting increased attention as an effective method for mitigating the environmental loads in urban areas and thus preventing the heat island phenomenon and global warming. The purpose of this study is to obtain the fundamental data needed for the examination of the direction of technology development for the future promotion of wall greening in urban areas and the object and range to be mainly grappled with in the field of research and development. The investigation was conducted by a questionnaire survey on 119 private companies which are grappling with the greening, development and utilization of rooftop spaces, in order to grasp the consciousness of those companies and their technical staffs about the market of wall greening, and the possibility of propagation, and sort out the technological tasks. The survey revealed that (1) the companies expect the wall greening market to expand, (2) the technical staffs recognize that the important thing in the technology development for wall greening is the quantification of environmental improvement effects the reduction of the costs of constructing and maintaining the green walls, and (3) the technical staffs also recognize the differ of the sites on which wall greening can be applied and the possibility of propagation among 6 types of wall greening ( 1) utilization of natural ground as the base of plants, 2) utilization of flames for support as well as natural ground base, 3) utilization of planters on each story, 4) utilization of planters with flames for support on each story, 5) installation of greening panels, 6)utilization of concrete blocks for greening).
