Studies found out that the recent urban development in Tokyo is helping improve biodiversity.

Major real estate companies have been creating forest-like spaces on rooftops and in courtyards of buildings, and developing water features such as ponds and rivers.

According to the Tokyo Metropolitan Government, these efforts have increased the proportion of green space and water surfaces in central Tokyo.

Such areas in the central Minato Ward have increased by about 1% between 2016 and 2021.

Mori Building revealed that approximately 180 species of insects such as butterflies and dragonflies, including endangered species, have been found in Roppongi Hills and Toranomon Hills.

The insects travel between these areas and large nearby green spaces such as the Imperial Palace and Meiji Shrine, indicating that urban green space has helped maintain and expand biodiversity.

In Tokyo Midtown developed by Mitsui Fudosan, the number of bird species visiting the site has increased by 1.8 times, and the number of butterflies by 1.4 times compared to before the development.