Previous Year Question

The Miyawaki method is an afforestation technique used to develop very dense, multi-layered forests composed mainly of locally native species on limited plots of land. It is, therefore, especially used for creating mini forests in urban areas.

The method was developed by Japanese botanist Akira Miyawaki during the 1970s. It is based on creating a plant community resembling the potential natural vegetation of an area.

Native species suited to the local climate and soil are selected. Shrubs, small trees, medium-sized trees and tall trees are planted close together to produce different vegetation layers resembling a natural forest.

Dense planting creates competition for sunlight, making plants grow rapidly upwards rather than sideways. The resulting dense canopy also suppresses the growth of weeds.

Irrigation, weeding and maintenance are required during the initial years; after establishment, the forest can become comparatively self-sustaining. Such forests can support biodiversity, provide habitats for birds and insects, absorb carbon, improve soil and help reduce the urban heat-island effect.