17.07.2019

# Media

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RealClimate: Can planting trees save our climate?

"n recent weeks, a new study by researchers at ETH Zurich has hit the headlines worldwide (Bastin et al. 2019). [...] Unfortunately, it’s also too good to be true. Because apples are compared to oranges and important feedbacks in the Earth system are forgotten. With a few basic facts about the CO2 increase in our atmosphere this is easy to understand. Mankind is currently blowing 11 billion tonnes of carbon (gigatonnes C, abbreviated GtC) into the air every year in the form of CO2 – and the trend is rising."

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15.07.2019

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Süddeutsche Zeitung: "Too good, to be true" (German)

German article on CE

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15.07.2019

# Media

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Phys.org: Exaggerating how much carbon dioxide can be absorbed by tree planting risks deterring crucial climate action

"Planting almost a billion hectares of trees worldwide is the "biggest and cheapest tool" for tackling climate change, according to a new study. The researchers claimed that reforestation could remove 205 gigatons of carbon dioxide (CO2) from the atmosphere—equivalent to about 20 years' worth of the world's current emissions. This has been criticized as an exaggeration. It could actually be dangerous."

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07.07.2019

# Media

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The Guardian: The wrong kind of trees: Ireland's afforestation meets resistance

"Ireland is ramping up its response to the climate crisis by planting forests – lots of forests. East, west, north, south, the plan is to plant forests, the more the better. With enough trees, goes the hope, Ireland can compensate for many of the cows, vehicles and fossil-burning power plants that make it one of Europe’s worst climate offenders."

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07.07.2019

# Media

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Legal Planet: Can Planting Trees Solve Climate Change?

"That is, the authors claim that reforestation is more effective than reducing greenhouse gas emissions. Unfortunately, this is misleading, if not false, as well as potentially dangerous. It is misleading for several reasons."

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07.07.2019

# New Publications

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Bastin, J.; et al. (2019): The global tree restoration potential

Bastin, J.; Finegold, Y.; Garcia, C.; Mollicone, D.; Rezende, M.; Routh, D. et al. (2019): The global tree restoration potential. In: Science (New York, N.Y.) 365 (6448), S. 76–79. DOI: 10.1126/science.aax0848.

"The restoration of forested land at a global scale could help capture atmospheric carbon and mitigate climate change. Bastin et al. used direct measurements of forest cover to generate a model of forest restoration potential across the globe (see the Perspective by Chazdon and Brancalion)."

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07.07.2019

# Media

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The Guardian: Tree planting 'has mind-blowing potential' to tackle climate crisis

"Planting billions of trees across the world is by far the biggest and cheapest way to tackle the climate crisis, according to scientists, who have made the first calculation of how many more trees could be planted without encroaching on crop land or urban areas."

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24.06.2019

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The Guardian: Can planting billions of trees save the planet?

"When Clare Dubois’s car skidded on an icy road in Stroud, Gloucestershire, a tree prevented her vehicle tumbling into a ravine. It was, she says, a sign. Humanity is nearing a precipice. Trees can stop us going over the edge."

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10.06.2019

# Media

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Klimareporter: The CCS-dilemma (German)

German article on CE

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31.05.2019

# New Publications

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Busch, J.; et al. (2019): Potential for low-cost carbon dioxide removal through tropical reforestation

Busch, J.; Engelmann, J.; Cook-Patton, S.; Griscom, B.; Kroeger, T.; Possingham, H.; Shyamsundar, P. (2019): Potential for low-cost carbon dioxide removal through tropical reforestation. In: Nature Climate change 9 (6), S. 463–466. DOI: 10.1038/s41558-019-0485-x.

"Achieving the 1.5–2.0 °C temperature targets of the Paris climate agreement requires not only reducing emissions of greenhouse gases (GHGs) but also increasing removals of GHGs from the atmosphere. Reforestation is a potentially large-scale method for removing CO2 and storing it in the biomass and soils of ecosystems, yet its cost per tonne remains uncertain. Here, we produce spatially disaggregated marginal abatement cost curves for tropical reforestation by simulating the effects of payments for increased CO2 removals on land-cover change in 90 countries."

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