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The final count would have taken millions of people years of work, but was completed in a matter of hours, thanks to the powerful algorithm. It contradicts previous studies, which were based on estimates and extrapolations, and mapped close to zero-percent tree cover. In contrast, Brandt’s highly detailed, painstaking counting of individual trees revealed a density of 13.4 per hectare.
In even better news, the new study’s numbers are likely underestimates, as it excluded trees or shrubs with small canopies, counting only those with an average crown size of 12 square meters.
Experts who reviewed the research said that it will soon be possible to map the location and size of every tree around the world.
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