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Tokyo's Concrete Jungles Bloom with Green Cooling
15 Sep
Summary
- Tokyo buildings are incorporating lush greenery to combat urban heat island effects.
- Forested areas in Otemachi show significant temperature reductions compared to paved surfaces.
- Green spaces enhance employee well-being and attract businesses to developments.
Japanese capital's high-rise business districts, often called "concrete jungles," are seeing a green transformation. Areas in Otemachi, near Tokyo Station, are now featuring planted trees and vegetation, actively combating the urban heat island effect by creating cooler microclimates.
Otemachi Tower, completed in 2014, boasts about 200 tall trees, creating a forested area. A 2025 survey showed temperatures within this area were significantly lower than at a nearby intersection and on paved sidewalks. This green space, covering one-third of the site, hosts diverse plant, insect, and bird species.
Similarly, Otemachi One, a complex developed in 2020, features extensive green spaces with hundreds of trees and shrubs. Developers report surface temperatures beneath tree shade are 10-20 degrees Celsius cooler. This natural setting is noted for attracting businesses and improving employee well-being.
Maintaining these forested areas incurs higher costs, yet companies find the investment valuable. The green spaces contribute to employees' physical, mental, and social well-being. Developers also see these natural settings as a way to differentiate their facilities, with plans to incorporate more greenery in future projects.
