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A suggestion by the UK Committee on Climate Change to burn more wood and plant replacement trees as a sustainable alternative to fossil fuels has drawn criticism from think tank Chatham House, which says this is hardly the best approach to reducing emissions.
"Expanding forest cover is undoubtedly a good thing, if you're leaving them standing," energy expert Duncan Brack told the Daily Telegraph. However, Brack, who served as special adviser to the Department of Energy and Climate Change, suggested that burning wood for heating was not the most sustainable way forward. Calling wood burning a carbon neutral process is “highly dubious,” Brack added.
These claims, according to the Telegraph’s environment editor, Emma Gatten, rest on the assumption that the carbon footprint of chopping down trees and burning them is offset by planting new trees to replace them. This assumption excludes the fact that older trees absorb more carbon and that it takes time to replace a forest.
"You can leave trees standing and they will continue to absorb carbon for decades," Brack says. "But the biomass industry implicitly assumes that forests at some point stop reach a saturation point for carbon intake and can be harvested and simply replaced."
The benefit of planting trees to mitigate the effects of climate change has been put to the test on a wider scale as well. A study released last year found that reforestation could work, but it had to be done at a massive scale.
We need to plant 25 percent more trees than there are on Earth right now, or more than half a trillion in total, the study found. This would reduce the amount of carbon in the atmosphere by a quarter, erasing 20 years of emissions. Yet it would not solve the climate problem on its own, without a sustained effort to cut emissions, commentators on the study said.
By Irina Slav for Oilprice.com
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Irina is a writer for Oilprice.com with over a decade of experience writing on the oil and gas industry.