Abstract
This study investigates how vegetation and past experiences influence Japanese people’s perceptions of the attractiveness of and their preferences for extensive green roofs with emphasis on the meadow. Although meadow green roofs are advantageous regarding biodiversity, maintenance, and costs, they are less frequently used in Japan. The survey questionnaire included photographs of seven types of green roofs (turf, sedum, wildflower meadow, designed meadow, solar panel meadow, meadow roof from a far distance, and biodiverse roof) for evaluation using paired adjectives and demographic data on experience with plants. The results of the questionnaire showed that turf roofs were the most favorable green roofs, whereas biodiverse and solar panel meadow roofs were the least favorable. Meadow roofs were more preferred if they were in the ‘designed’ or far-distance categories. Design input may improve the perception of meadow roofs, and thus, their acceptance by the public. Participants who had past experience with plants were attracted to roofs they described as ‘comfortable’ and ‘interesting’. These findings are useful for creating the new value of green roofs and the further development of extensive green roofs in Japan.
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