An observation study on the degradation of the heat island mitigationeffect by damage to the grass in 'Grass Parking'

摘要

"Grass Parking" is the parking which has grass-covered parking lots. It aims at the heat islandmitigation effect, creating green environment and improving landscape .In this study, the degra-dation of the quality of the grass was focused. To consider it, the surface temperature distribu-tion in the parking lot was used. The surface temperatures of the good condition grass are lowerthan the damaged grass. However, the rise of surface temperature of the damaged grass is onlyduring the day. In the morning and in the night, the difference of surface temperature is verysmall. And another thing, to consider the heat island mitigation effect, it was analyzed the sur-face heat budget. The sensible heat flux of the good condition grass is 80 W/m2 lower than thedamaged grass in the daytime .As a measure against damage to the grass, it is thought changingthe part of the damaged grass into other pavements, for example logs, blocks, reinforced plasticand so on.