屋上緑化

Urban Farm DB summary

The Japanese Wikipedia article on rooftop greening traces its origins to the Hanging Gardens of Babylon around 600 BCE, and in Japan cites the 1934-built Asakura Museum of Sculpture as a surviving early example, with Nihonbashi Takashimaya among the pioneers from the late 1960s onward. It lists effects including heat island mitigation, improved insulation, sound reduction, increased water retention, air purification, and improved landscape, dividing methods into lightweight thin-layer greening using sedum or lawn versus full garden-style greening with flower beds and shrubs.