屋おく上じょう緑りょく化か

noun

rooftop greening; rooftop gardening; rooftop planting

Refers to the practice of covering roofs with vegetation for environmental benefits such as insulation, rainwater absorption, and urban heat island mitigation. Often used in architectural, environmental, and urban planning contexts.

• このビルは屋おく上じょう緑りょく化かによって夏なつの冷れい房ぼう費ひを削さく減げんしている。

  This building reduces summer cooling costs through rooftop greening.

• 市しは新しん築ちくの公こう共きょう施し設せつに屋おく上じょう緑りょく化かを義ぎ務むづけた。

  The city mandated rooftop greening for new public facilities.