Thread by @stavercarla, Y'all, planting trees willy-nilly will not solve our emissions problems.@CrowtherLab made (at [...]

Y'all, planting trees willy-nilly will not solve our emissions problems.

@CrowtherLab made (at least) 7 major errors:
1. Total historical emissions are 2x their number (600 GtC, not 300)
2. They overestimate max C per forest area

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3. They ignore existing soil & veg carbon in target areas
4. They ignore that it takes time for carbon to accumulate (= time lags in sequestration)
5. They ignore feedbacks w/ albedo in future projections...
6. ...& feedbacks w/ [CO2]
7. Afforestation is not reforestation!

2/4

The evidence (3 independent technical comments!):
https://science.sciencemag.org/content/366/6463/eaay8060
https://science.sciencemag.org/content/366/6463/eaaz0388
https://science.sciencemag.org/content/366/6463/eaay7976

#notaforest #bonnchallenge @jgpausas @SimonLLewis

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Comment on “The global tree restoration potential”

Bastin et al .’s estimate (Reports, 5 July 2019, p. 76) that tree planting for climate change mitigation could sequester 205 gigatonnes of carbon is approximately five times too large. Their analysis...

https://science.sciencemag.org/content/366/6463/eaay8060

Their rebuttal:
https://science.sciencemag.org/content/366/6463/eaay8108

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Response to Comments on “The global tree restoration potential”

Our study quantified the global tree restoration potential and its associated carbon storage potential under existing climate conditions. We received multiple technical comments, both supporting and...

https://science.sciencemag.org/content/366/6463/eaay8108

I missed one, arguing that, even if planting trees had the proposed outcome, planting enough trees is not actually possible: https://science.sciencemag.org/content/366/6463/eaay8334

Comment on “The global tree restoration potential”

Bastin et al . (Reports, 5 July 2019, p. 76) neglect considerable research into forest-based climate change mitigation during the 1980s and 1990s. This research supports some of their findings on the...

https://science.sciencemag.org/content/366/6463/eaay8334

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