EXPERIMENTAL INVESTIGATION OF PRACTICALITY OF BAMBOO AS A BASE MATERIAL FOR ROOFTOP GREENING

抄録

 In recent years, rooftop greening has been actively carried out across Japan as a measure to reduce the effects of global warming and urban heat islands and to create a comfortable environment. In this experiment, we focused on bamboo, otherwise perceived to be a nuisance and in need of effective use. We examined its practicality as a base material for rooftop greening when mixed with composted sewage sludge. The results confirmed stable vegetation in a base material with a mixture of composted sewage sludge and bamboo powder at a 1:1 ratio. The experiment also showed high microorganism activity and an increase in nitrogen content, which confirmed the practicality of bamboo in the base material. The rainfall test indicated good drainability and water retentivity and showed that the base material sufficiently satisfied the criteria for live load and drainage water quality. Therefore, we conclude that the base material with the above mixture ratio has high practicality.