To provide a greening base sheet capable of improving weather-resistant without destroying plant growth through partly using a biodegradable material while securing an advantage of a lightweight synthetic resin material excellent in handling in a conventional manner, to provide a greening base material, and to provide a greening system of a building.
This greening base sheet 1 is made by superposing a shading nonwoven fabric 4 made of synthetic resin on a water retaining nonwoven fabric 5 which partly contains a biodegradable fiber. The shading nonwoven fabric is made of a colored raw thread. The greening base material 2 is made by superposing below the water retaining nonwoven fabric of the greening base sheet and setting a polystyrene foam-made base material 6 which has a plurality of through holes and whose surface is formed in a perforated form.
HONNA HIROSHI
EBI SEITARO
TEIJIN FIBERS LTD
HAKUSUI KOSAN KK
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