According to the classical theory of succession initiated by Clements in the U.S., it should need 150 to 200 years for a young native forest with a multi-layered community to restore itself on bare soil in Japan, and it takes 300–500 years or more in the tropics of Southeast Asia.
Miyawaki seeks to accelerate the process of ecological healing by imitating as much as possible the normal composition of the primary forest in each context. He expects to get a restored temperate forest, whose facies and structure (distinct genetics, humus, and sections of old or dead wood) strongly resemble the native forest, in 20 to 30 years.
Miyawaki has extensively tested the method in:
Deforested sites in dry tropical zones in Thailand
Alluvial tropical forests in the Brazilian Amazon,
The old Nothofagus (southern beeches) forest area in Concepción (Chile).
In each case, he was able to quickly restore a dense canopy reminiscent of the native forest.
In 1998, Miyawaki piloted a project of reconstruction of a forest dominated by the Mongolian Oak (Quercus mongolica) along the Great Wall of China, gathering 4000 people to plant 400,000 trees, with the support of the Aeon Environment Foundation and the city of Beijing. The first trees planted by groups of Chinese and Japanese, on areas where the forest had long since gone, had grown over 3 m high in 2004 and - except for one part - continued to thrive in 2007.
Miyawaki also contributes to the massive reforestation in China by Government and Chinese citizens, no longer seeking to plant commercial species for commercial or ornamental purpose only, but to restore the natural potential vegetation, including in Pudon (west coast district in the special economic zone of Shanghai), Tsingtao (Qingdao), Ningbo, and Ma'anshan.
Miyawaki received the 2006 Blue Planet Award for his involvement in the protection of nature.
His method had already been presented as exemplary in a preparatory report for the 1992 Earth Summit, and in 1994 in the Biodiversity congress of the UNESCO in Paris. The method was also presented in 1991 at the Symposium of the University of Bonn, "restoration of tropical forest ecosystems " and at the congresses of the International Association for Ecology, the International Society for Vegetation Science, and the International Botanical Congress, including new aspects including the links between growth, natural habitat and estimated carbon fixation.
Curiously, despite more than 1,000 successful and sometimes spectacular experiences, the Western forestry or landscape world has rarely attempted to apply or even test the "Miyawaki method".
"Rather than scrap them, I want to bring memory objects back to life as earth resources - for the sake of repose of souls, and for the future."