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Quick answer：Rooftop greening refers to the practice of creating green spaces on the roofs of buildings, which can include the installation of gardens, lawns, or other vegetation. Courtyard rooftop greening sketch is likely a hand-drawn illustration showing the design or concept for a green rooftop in a courtyard setting. This practice is popular for its environmental benefits, such as reducing urban heat island effect, improving air quality, and providing additional green space in urban areas.
