Meeting Yamada Yoriyuki at Kajima

Recently I met with Yamada Yoriyuki (山田順之), Manager of the Office of Global Environment at constructino company Kajima and a leader in bringing biodiversity ideas to Japanese corporations. He showed me the new interactive illustration Kajima created of an integrated sustainable city, where bees pollinate community gardens, school fields are mowed by goats, falcons provide crow control, rivers support animal life, hospitals have healing gardens, and plants and animals contribute to a better environment.

Yamada’s vision for new urbanism is holistic, with the widest variety of wildlife improving human life. Contrary to the government’s minimal regulations, Yamada boldly states, “I am not interested in greening.” Instead of applying green to existing projects, Yamada emphasizes habitat and culture. Habitat requires links between insects and birds, bees and food, trees and birds, clean water and fish. As an anthropologist, I was also pleased to hear Yamada emphasize culture as key to creating social change in cities. Yamada cites the importance of “eight million kami” (ya-o-yorozu no kami or 八百万の神), a Shinto belief in animism and the presence of spirits in an infinite number of natural beings and materials.

In addition to working with Kajima and the Japanese Business Initiative for Biodiversity, Yamada is very hands-on. He explained how he monitors honeybees on Kajima’s Ikebukuro dormitory using GPS and biking along a 2 kilometer radius. From his observations, he sees urban honeybees avoiding park and street trees because pesticides have made them unsafe, and preferring instead small gardens grown by residents.

Yamada also cites the Japanese Pygmy Woodpecker as a key indicator species. Because it travels relatively short distance, urban habitat requires a series of interconnected parks and street trees creating a green web. I find this idea of the ecological connection between large public spaces and individual gardens very inspiring.

I also highly recommend the article he co-authored: Kumagai, Yoichi and Yoriyuki Yamada. “Green Space Relations with Residential Values in Downtown Tokyo: Implications for Urban Biodiversity Conservation.” Local Environment, Routledge Press, Vol. 13, No. 2, 141–157, March 2008.

Kajima and bees

Yamada Yuriyuki (山田順之) , a biodiversity specialist at Kajima, one of Japan’s largest construction companies, appears in a video on Japanese TV about Kajima’s beekeeping and biodiversity education work. Kajima has started a hive in one of their buildings, and is studying how and where bees travel.

Yamada-san makes the important point that “greening” is not just about aesthetics but about eco-systems. Bees play an important role because they pollinate fruit trees that in turn attract birds. Bees also scare away crows. And it is because of the decline of bees in the wild that farmers need to manually pollinate fruits and vegetables. The video also shows how Kajima has educated school kids about the value of bees.

I am curious how far bee-keeping can take off in Tokyo, and the connections its advocates can make with native plants, urban wildlife, and city agriculture.