The Miyawaki forest method is a technique pioneered by Japanese forest ecologist Akira Miyawaki to restore native forests by native trees.

The method involves the following steps:
-Determine the plant species native to a given area.
-Improve the soil by mixing in organic material.
-Plant seedlings of native trees and understory plants in a dense, mixed manner (about three seedlings per square meter) meant to simulate a natural forest.
-Remove weeds from the site for up to three years after planting, if necessary.

Miyawaki forests grow in two to three years and are self-sustaining. They help lower temperatures in concrete heat islands, reduce air and noise pollution, attract local birds and insects, and create carbon sinks.

The method has revolutionized the concept of urban afforestation by turning small undeveloped areas into mini-forests.

Miyawaki forests are a global sensation, but not everyone’s sold on them (mongabay.com)
The Miyawaki Method for Creating Forests – Creating Tomorrow’s Forests | Restoring biodiversity by creating habitats and planting trees (creatingtomorrowsforests.co.uk)
Akira Miyawaki – Wikipedia
Miyawaki Method – Drishti IAS