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robertogreco : shubhendusharma   1

How to Grow a Forest Really, Really Fast — TED Fellows — Medium
"A forest planted by humans, then left to nature’s own devices, typically takes at least 100 years to mature. What if we could make the process happen ten times faster? Eco-entrepreneur Shubhendu Sharma’s figured out a way of growing native, self-sustaining forests anywhere in the world, with the efficiency of industrial processes. He tells us how.


Back in 2008, I was an industrial engineer at Toyota in India, helping prepare assembly lines and dispatch systems for car manufacture. One day, a scientist named Akira Miyawaki came to the factory to plant a forest on Toyota’s campus. He gave a presentation on his methods, and I became so fascinated that I decided I wanted to learn how to plant a forest myself.

Miyawaki is quite famous, and very old; he’s now 87. He has planted around 40 million trees all over the world, and in 2006, he won the Blue Planet Prize, the equivalent to the Nobel Prize in the environmental field. His method’s based on what’s called “potential natural vegetation”— a theory that if a piece of land is free from human intervention, a forest will naturally self-seed and take over that land within a period of around 600 to 1,000 years, with the species that would be native and robust, and that would require no maintenance. Miyawaki’s methodology amplifies that growth process to establish a mature, native forest in ten years — ten times the normal rate of forests planted by humans.

Intrigued, I volunteered with Miyawaki and studied his methodologies, and then planted a forest of 300 trees of 42 species in a 93-square-meter plot in my back garden. It was such a success that I decided to quit the car industry to start Afforestt, a for-profit company devoted to planting native forests for all kinds of clients, from farmers to corporations to city governments.

Here’s how it works. It takes six steps.

1. First, you start with soil. We identify what nutrition the soil lacks.

2. Then we identify what species we should be growing in this soil, depending on climate.

3. We then identify locally abundant biomass available in that region to give the soil whatever nourishment it needs. This is typically an agricultural or industrial byproduct — like chicken manure or press mud, a byproduct of sugar production — but it can be almost anything. We’ve made a rule that it must come from within 50 kilometers of the site, which means we have to be flexible.

4. Once we’ve amended the soil to a depth of one meter, we plant saplings that are up to 80 centimeters high, packing them in very densely — three to five saplings per square meter.

5. The forest itself must cover a 100-square-meter minimum area. This grows into a forest so dense that after eight months, sunlight can’t reach the ground. At this point, every drop of rain that falls is conserved, and every leaf that falls is converted into humus. The more the forest grows, the more it generates nutrients for itself, accelerating further growth. This density also means that individual trees begin competing for sunlight — another reason these forests grow so fast.

6. The forest needs to be watered and weeded for the first two or three years, at which point it becomes self-sustaining. After that, it’s best to disturb the forest as little as possible to allow its ecosystem, including animals, to become established."

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trees  forests  agriculture  environment  2015  plants  kareneng  shubhendusharma  rewilding  afforestation  geoengineering  afforestt  akiramiyawaki  india  toyota 
april 2015 by robertogreco

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