Planting trees could buy more time to fight climate change than thought
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Planting trees could buy more time to fight climate change than thought
Even something as simple as the darkness of tree leaves can change how much heat a landscape absorbs or reflects. Expanding forests into formerly snow-bright, reflective zones, for instance, might warm them. In the tropics, however, the enhanced cooling from clouds might be the more powerful effect.
https://www.sciencenews.org/article/planting-trees-could-buy-more-time-fight-climate-change-thought
A whopping new estimate of the power of planting trees could rearrange to-do lists for fighting climate change.
Planting trees on 0.9 billion hectares of land could trap about two-thirds the amount of carbon released by human activities since the start of the Industrial Revolution, a new study finds. The planet has that much tree-friendly land available for use. Without knocking down cities or taking over farms or natural grasslands, reforested pieces could add up to new tree cover totaling just about the area of the United States, researchers report in the July 5 Science.
The new calculation boosts tree planting to a top priority for gaining some time to fight climate change, says coauthor Tom Crowther, an ecologist at ETH Zurich. The study used satellite images to see how densely trees grow naturally in various ecosystems. Extrapolating from those images showed how much forest similar land could support. Plant a mix of native species, he urges. That will help preserve the birds, insects and other local creatures.
The analysis revealed space to nourish enough trees to capture some 205 metric gigatons of carbon in about a century. That’s close to 10 times the savings expected from managing refrigerants, the top item on a list of climate-fighting strategies from the nonprofit Project Drawdown, a worldwide network of scientists, advocates and others proposing solutions to global warming.
The benefit of tree planting will shrivel if people wait, the researchers warn. Earth’s climate could change enough by 2050 to shrink the places trees can grow by some 223 million hectares if the world keeps emitting greenhouse gases as it does now, the analysis suggests.
https://www.sciencenews.org/article/planting-trees-could-buy-more-time-fight-climate-change-thought
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Re: Planting trees could buy more time to fight climate change than thought
Very interesting, and it would be cool to see what would happen to the model if reducing carbon emissions was factored in as well.
I think a lot of rooftops would be good candidates for climate change-fighting vegetation as well.
I think a lot of rooftops would be good candidates for climate change-fighting vegetation as well.
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