From the article: the Miyawaki method, a forestation technique that creates fast-growing, highly biodiverse native forests in the middle of urban areas, or even on deteriorating land. This planting style forces vegetation to compete for resources, accelerating its growth. A forest planted using this technique can grow in 30 years and requires no maintenance after three years.

Wikipedia: https://en.wikipedia.org/wiki/Akira_Miyawaki#Method_and_cond...

A dense plantation of very young seedlings (but with an already mature root system: with symbiotic bacteria and fungi present) is recommended. Density aims at stirring competition between species and the onset of phytosociological relations close to what would happen in nature (three to five plants per square metre in the temperate zone, up to five or ten seedlings per square metre in Borneo).

> In 1973, it decreed that factories of a certain size must allocate 20% of their surface area to green spaces.

This sounds like such a fine idea.

In my yard, I wanted to expand the parking space with some temporary parking, but didn't want ugly paving. With the generally wet weather, that meant mud and ruts. A contractor I talked to suggested "grasscrete".

https://grasscrete.com/

Mine is just using cinderblocks laid on their side. The vegetation grows up through the holes in the grasscrete, while the cinderblocks support the weight of the car without disrupting the vegetation. The holes let the water sink in instead of running off.

Over time, it has been colonized by native vegetation, and you can't even see the grasscrete. I've been very pleased with the results, and wonder why its use isn't common. It's rarely used for parking, which lets the vegetation recover.