'Shocking': wilderness the size of Mexico lost worldwide in just 13 years, study finds | Environment | The Guardian
https://amp.theguardian.com/...erness-the-size-of-mexico-lost-worldwide-in-just-13-years-study-finds
https://www.cell.com/one-earth/fulltext/S2590-3322(20)30418-8
Wilderness across the planet is disappearing on a huge scale, according to a new study that found human activities had converted an area the size of Mexico from virtually intact natural landscapes to heavily modified ones in just 13 years.
The loss of 1.9m square kilometres (735,000 sq miles) of intact ecosystems would have “profound implications” for the planet’s biodiversity, the study’s authors said.
Using mostly satellite imagery, 17 scientists across six countries examined the human footprint across the globe and how it had changed between 2000 and 2013.
Almost 20% of the earth’s surface had deteriorated, the study found, while human pressure had eased on only six per cent of the planet.
Russia, Canada, Brazil, and Australia held the largest intact areas, together responsible for 60% of the world’s most untouched places.
Some 1.1m sq km (425,000 sq miles) of wilderness identified from imagery in 2000 had some human impact 13 years later.
Tropical savannahs and grasslands lost the most area to human pressure, the study, published in the journal One Earth, found.