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  • Every year, humans change 10 million hectares of land,

  • and not for the better.

  • Right now, there are more than two billion hectares of degraded land

  • around the world.

  • We need to fix this fast, and technology can help.

  • Restoration is an enormous, complex challenge.

  • It cannot be done by simply planting trees.

  • We need to bring native, complex ecosystems back to life,

  • and it requires deep ecological expertise.

  • Until now, we have been limited to poor facsimiles,

  • like vast plantations of a single kind of tree.

  • But drones change that by allowing us to gather data

  • and plant the right mix of vegetation quickly, at enormous scales.

  • And machine-learning analysis enables us to plan the planting

  • and then monitor our restoration work.

  • For example, in Australia,

  • we're using drone-based planting and ecology-trained AI

  • to restore thousands of hectares of land mined for coal.

  • Not just planting trees,

  • but bringing back biodiverse, complex ecosystems.

  • On a larger scale, native forests here in Australia

  • have been decimated by catastrophic bushfires

  • and land-clearing for agriculture.

  • This means diminished food sources and safe habitats for koalas.

  • A new project would allow us to accelerate

  • the restoration of thousands of hectares of koala forests

  • over the next few years.

  • With these combined technologies,

  • we're able to scale up restoration

  • from a small island to an entire continent.

  • We can return forests to land where a mine used to be,

  • or recreate ecosystems

  • like the one we're hoping to restore on Lord Howe Island,

  • birthplace of one of the world's largest insects.

  • This unique island is plagued by imported species,

  • where we're helping to eradicate the undesirable plants

  • to allow endemic species to thrive.

  • It's not just billions of trees.

  • It's restoring nature in all its complexity and beauty.

  • Thank you.

Every year, humans change 10 million hectares of land,

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B2 US TED restoration planting land restore island

Susan Graham: A new way to restore Earth's biodiversity -- from the air | TED

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    黃裕修 posted on 2022/05/14
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