This is the best summary I could come up with:
Scientists from the Southern University of Science and Technology in Shenzhen, China, used remote sensing to map the highest points of patches of tree coverage on mountains.
On average, treelines moved upwards by 1.2 metres (4ft) a year, but the shift was greatest in tropical regions, with an average increase in elevation of 3.1 metres a year – and in all regions they found the rate of change was accelerating.
In total, the researchers tracked almost 1m km (620,000 miles) of treeline across 243 mountain regions around the world.
The researchers found that the treelines still moved, which demonstrates that they are sensitive to changes to climate beyond human influence.
Rising temperatures will enhance growth above the level of the current treeline: more trees mean more carbon will be removed from the atmosphere.
“Our work … has important implications for biodiversity, natural resources, and ecosystem adaptation in a changing climate.”
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