How far should we go “native”? Re-conceptualizing biodiversity restoration in urban forests

Keynote Speech by Professor Makoto Yokohari, The University of Tokyo, at the IUFRO Regional Congress for Asia and Oceania

Restoring biodiversity by reforesting urban fabrics is one of common urgent tasks for cities in the world in general and in the Asia and Oceania region in particular. After all, seven of the ten largest cities in the world are in this region. One of these cities is Tokyo. It accommodates 10 million people. More than 30 million people live in the national capital region; this is one third of the total population of Japan. However, despite the high number of population in Tokyo, one third of its area is mountainous, largely covered by natural and planted forest patches.

Professor Makoto Yokohari during his keynote speech. Photo: Gerda Wolfrum, IUFRO Headquarters

We should be aware of the fact that where you find megacities you often also find high biodiversity. Consequently, when talking about biodiversity, we cannot exclude cities as they often coincide with biological hotspots. Of course, the green spaces in cities do not only serve the purpose of biodiversity but they are also used by people for recreation. Urban greens are areas of human comfort. But how to balance between human comfort and biodiversity? Read more…